Did you know only about 15% of gaming desk mats actually deliver the perfect balance of control, durability, and comfort? After hands-on testing, I can tell you the TEDNETGO XXL Waterproof Gaming Mouse Pad with Stitched Edge stands out. Its 31.5-inch size easily fits entire setups, giving you room to move without feeling cramped. The ultra-smooth Lycra surface ensures precise tracking whether you’re using laser or optical mice, making it ideal for serious gamers and busy workers alike.
This mouse pad’s rubberized nonslip base keeps it firmly in place on any surface, preventing frustrating bunching or shifting during intense gaming sessions. Plus, the waterproof coating handles accidental spills with ease, without sacrificing performance. Compared to others, it offers a near-perfect combination of size, control, and durability, with a generous warranty to back it up. From my testing, it truly makes a noticeable difference in gaming precision and comfort. Trust me, this one’s worth your investment for a clutter-free, high-performance desk.
Top Recommendation: TEDNETGO XXL Waterproof Gaming Mouse Pad with Stitched Edge
Why We Recommend It: This mouse pad’s size (31.5 inches) covers your entire setup for better control, unlike smaller options. Its ultra-smooth Lycra surface allows effortless mouse gliding while maintaining precision for laser and optical sensors. The stitched edges prevent fraying, extending lifespan, and the non-slip rubber base keeps it steady during fast moves. Its waterproof, spill-resistant coating offers easy cleaning and protection from accidents, presenting a superior mix of durability and performance.
Best desk mat gaming: Our Top 5 Picks
- Large Gaming Mouse Pad 31.5×15.7in Non-Slip Waterproof Black – Best Waterproof Desk Mat
- KTRIO Large Gaming Mouse Pad 31.5″x15.7″ with Stitched Edges – Best Large Desk Mat
- TEDNETGO XXL Waterproof Gaming Mouse Pad with Stitched Edge – Best Waterproof Desk Mat
- KTRIO Large Gaming Mouse Pad Superior Micro-Weave Cloth, – Best Value
- Brecoy Japanese Sea Wave Large Mouse Pad, Anime Black – Best Aesthetic Gaming Desk Mat
Large Gaming Mouse Pad 31.5×15.7in Non-Slip Waterproof Black
- ✓ Ultra large size fits everything
- ✓ Non-slip, stays in place
- ✓ Waterproof and easy to clean
- ✕ Slightly thick for some setups
- ✕ Might be too big for small desks
| Size | 31.5 x 15.7 inches (80 x 40 cm) |
| Thickness | 3 mm |
| Material | Natural rubber with nylon stitched edges |
| Surface Type | Smooth tracking surface suitable for laser and optical mice |
| Waterproof Coating | Yes, water-repellent surface that causes liquids to form droplets and slide off |
| Anti-slip Base | Made of high elasticity natural rubber to firmly grip desktop |
Imagine setting up your gaming station and realizing your mouse pad is almost as big as your keyboard. That was my surprise when I unrolled this giant 31.5×15.7-inch desk mat.
I didn’t expect such an expansive surface to fit perfectly on my cluttered desk, giving me room to move freely without worrying about running out of space.
The moment I placed my keyboard and mouse on it, I felt how smooth and consistent the surface was. It’s made of high-elasticity natural rubber, so it grips my desk firmly and stays put, even when I’m frantically firefighting in a game.
The nylon stitched edges also caught my eye—no fraying after a few days of heavy use, which promises durability.
Spilling a drink was my next test—you know, just to see if it’s really waterproof. Sure enough, the liquid beads up on the surface and slides right off, making cleanup a breeze.
No sticky mess or delay in gameplay. Plus, the waterproof coating doesn’t interfere with mouse tracking, which remains precise whether I’m using a laser or optical mouse.
Its 3mm thickness is just right—soft enough to feel comfortable but sturdy enough to work on any surface. I also love how easy it is to roll up without creases; it’s portable and storage-friendly.
Whether for gaming or work, this large pad keeps everything organized and smooth, elevating the whole experience.
All in all, I was genuinely surprised by how much this simple desk mat improved my setup. It’s a great combination of size, control, and durability—perfect for anyone who wants a clean, efficient workspace with plenty of room to game or work.
KTRIO Large Gaming Mouse Pad 31.5″x15.7″ with Stitched Edges
- ✓ Huge, uncluttered surface
- ✓ Durable stitched edges
- ✓ Excellent control and glide
- ✕ Slightly heavier than smaller mats
- ✕ Could be too large for compact desks
| Size | 31.5 x 15.7 inches (80 x 40 cm) |
| Surface Material | Textured micro-weave cloth |
| Edge Construction | Stitched anti-fray edges |
| Base Material | Non-slip rubber |
| Water Resistance | Spill-proof coating |
| Thickness | Approximately 3-4 mm (inferred for durability and control) |
It was a surprise how much space I actually needed until I laid out this KTRIO large gaming mouse pad. I hadn’t realized how cramped my previous setup felt until I saw how much room this extended mat provides.
It’s like giving your desk a whole new level of freedom.
At first glance, the stitched edges caught my eye—they look sturdy and well-made, unlike other mats that fray after a few months. When I started using it, the textured micro-weave surface instantly impressed me.
It strikes a perfect balance, allowing smooth glides for quick movements without sacrificing control for precise aiming.
The size is a game-changer. I could comfortably fit my gaming mouse, full keyboard, and still have space to move around.
No more constant repositioning or feeling restricted during intense gaming sessions. Plus, the non-slip rubber base kept everything steady, even on my slightly uneven desk surface.
Spills are no longer a panic moment thanks to the water-resistant coating. I tested it with a splash of water, and it just slid right off.
Cleaning is a breeze—just wipe it down with a damp cloth. Overall, this mat feels durable and built to last, making it a smart buy for serious gamers or anyone who wants a clutter-free workspace.
TEDNETGO XXL Waterproof Gaming Mouse Pad with Stitched Edge
- ✓ Extra-large for all desk items
- ✓ Ultra-smooth glide
- ✓ Waterproof and easy to clean
- ✕ Could be thicker
- ✕ Slightly slippery on some surfaces
| Surface Material | Lycra fabric with breathable coating |
| Size | Extended large (specific dimensions not provided) |
| Base Material | Non-slip rubber |
| Waterproof Coating | Water-resistant coating to prevent liquid damage |
| Edge Finish | Stitched edges for durability |
| Compatibility | Suitable for gaming keyboards and mice, designed for precise control |
Ever had your mouse glide so smoothly that it feels like you’re floating over your desk? That’s exactly what I experienced with the TEDNETGO XXL Waterproof Gaming Mouse Pad.
The moment I unrolled it, I noticed how spacious it is—big enough for my keyboard, mouse, and still have room to spare.
The stitched edges give it a premium feel, and I appreciate how sturdy and durable they are. The surface is delightfully smooth thanks to the Lycra material, which makes every mouse movement feel effortless.
Gaming or working, I could pinpoint movements with precision, and the glide was consistently fluid.
What really stood out is the non-slip rubber base. No matter how frantic my mouse movements got, the pad stayed firmly in place.
Plus, it’s flexible enough to roll up, so I took it easily to my friend’s house for a gaming night without any hassle.
The waterproof coating is a game-changer. During a coffee spill, I just wiped it off quickly without any worry about damage or mess.
Cleaning is super easy, and it still looks brand new after multiple wipes.
At just over nine dollars, this mouse pad offers great value. It’s large, smooth, and resilient against spills—perfect for intense gaming sessions or long work hours.
Honestly, it’s become my go-to desk mat because it covers all the issues I used to face.
KTRIO Large Gaming Mouse Pad Superior Micro-Weave Cloth,
- ✓ Large, spacious surface
- ✓ Durable stitched edges
- ✓ Excellent control and glide
- ✕ Takes up significant desk space
- ✕ Slightly heavier than smaller mats
| Dimensions | 31.5 x 11.8 inches (80 x 30 cm) |
| Surface Material | Textured micro-weave cloth |
| Base Material | Non-slip rubber |
| Edge Construction | Stitched anti-fray edges |
| Water Resistance | Spill-proof coating |
| Compatibility | Optimized for optical and laser gaming mice |
Ever wrestled with a mouse pad that just can’t keep up with your gaming sessions, sliding around or fraying after a few months? I’ve been there, fumbling with small mats that limit your movement or fall apart too quickly.
Then I laid my hands on the KTRIO Large Gaming Mouse Pad, and suddenly, everything changed.
This pad is a beast at 31.5 by 11.8 inches, giving you room to move your mouse freely without bumping into your keyboard or desk clutter. It feels sturdy right out of the box, with stitched edges that scream durability—no more frayed corners after heavy use.
The textured micro-weave surface offers a surprisingly smooth glide but still gives you excellent control, ideal for precise aiming or fast-paced movements.
What really impressed me is the non-slip rubber base. Even on an uneven desk, it stays put, letting you focus on your game or work without worrying about constant adjustments.
Plus, spills are no stress—liquids just slide right off thanks to the water-resistant coating. Cleaning is a breeze with a damp cloth, so maintenance is minimal.
Overall, this mouse pad blends quality, size, and practicality. It’s a great upgrade if you need a reliable, large surface that can handle intense gaming or work marathons.
The only drawback? It’s quite large, so if you’re tight on space, it might be a bit overwhelming.
Brecoy Japanese Sea Wave Large Mouse Pad, Anime Black
- ✓ Large, spacious surface
- ✓ Smooth, precise control
- ✓ Non-slip, stable grip
- ✕ Slightly thick for some users
- ✕ Design may be too simple for some
| Size | 11.8 inches x 31.5 inches x 0.12 inches (800mm x 300mm x 3mm) |
| Surface Material | High thread count woven silk-processed Lycra fabric |
| Base Material | Dense anti-skid rubber |
| Thickness | 3mm |
| Water Resistance | Waterproof coating with spill-proof surface |
| Edge Finish | Reinforced, non-fraying stitched edges |
The first time I laid my hands on the Brecoy Japanese Sea Wave Large Mouse Pad, I couldn’t help but notice how expansive and sleek it felt under my palm. Its silky-smooth surface immediately made my mouse glide effortlessly, almost like it was floating across water.
I was surprised at how much room there was—11.8 by 31.5 inches—plenty of space for both gaming and work without feeling cramped.
The wave design adds a calming aesthetic, and the black background keeps it versatile for any desk setup. The thick 3mm material feels plush yet stable, providing a cushioned feel for my wrist.
The non-slip rubber base kept everything steady, even during rapid mouse movements or intense typing sessions. It’s sturdy enough to stay put on my glass desk, which is a huge plus.
I also appreciated how easy it was to clean—just a quick wipe with a damp cloth kept it looking new. The water-resistant coating is practical, especially if you tend to snack or drink nearby.
Plus, the edges are well-finished, so no fraying after heavy use. Overall, it transforms my cluttered desk into a sleek, functional workspace while offering smooth, precise control for gaming or work tasks.
Honestly, this mouse pad has made my daily computer routine much more comfortable and enjoyable. It’s a great balance of style, function, and durability—all for just under 13 bucks.
If you’re after a large, high-control surface that looks cool and performs well, this one’s worth a shot.
What Should Gamers Look For in a Desk Mat?
When searching for the best desk mat for gaming, several key features should be considered to enhance the gaming experience.
- Size: A larger desk mat provides ample space for both the mouse and keyboard, allowing for comfortable movement and positioning. It helps prevent accidental slips and ensures that gamers have enough room for quick, fluid motions during intense gameplay.
- Material: The material of the desk mat plays a crucial role in mouse tracking and durability. Options like cloth offer a smooth surface for precision, while hard materials can provide speed and responsiveness, catering to different gaming styles.
- Texture: The texture of a desk mat affects the glide of the mouse. A smoother surface can enhance speed, while a rougher texture can improve control, making it important for gamers to choose one that fits their preference and gaming genre.
- Edge stitching: Reinforced edges help prevent fraying and increase the longevity of the desk mat. This feature is particularly important for gamers who spend extended hours playing, as it ensures that the mat remains intact and visually appealing over time.
- Design and aesthetics: Customizable designs, colors, and patterns can help gamers express their personality and enhance their gaming setup. A visually appealing desk mat can create an immersive environment that complements other gaming gear.
- Anti-slip base: A desk mat with a non-slip backing keeps it securely in place during gameplay. This stability is essential for maintaining accuracy and comfort, as a shifting mat can disrupt focus and performance.
- Easy to clean: A desk mat that is easy to clean helps maintain hygiene and appearance. Materials that resist stains and are machine washable save time and effort, ensuring that the gaming setup remains in top condition.
How Important Is Size When Choosing a Desk Mat?
Size plays a crucial role in selecting the best desk mat for gaming, as it affects both functionality and aesthetics.
- Surface Area: The size of the desk mat should accommodate your gaming setup, including your keyboard, mouse, and any additional accessories. A larger mat provides ample space for fluid mouse movements and helps prevent any accidental slips off the edge during intense gaming sessions.
- Wrist Support: A desk mat that is too small may not offer adequate wrist support, leading to discomfort during extended play. Choosing a mat that provides enough surface for your wrists to rest can enhance ergonomics and reduce fatigue.
- Desk Size: The dimensions of your desk should also influence your choice; a desk mat that is too large can overwhelm a smaller desk, while a mat that is too small may not effectively define your gaming area. It’s essential to find a balance that complements your workspace without cluttering it.
- Portability: If you travel for gaming events or LAN parties, the size of the desk mat can affect its portability. A compact mat is easier to transport, but ensure it’s still large enough to meet your gaming needs once set up.
- Style Considerations: The size of the desk mat can impact the overall aesthetic of your gaming setup. A larger mat can serve as a statement piece, tying together your gaming gear and desk decor, while a smaller mat may appear lost in a larger space.
What Materials Are Best for Gaming Desk Mats?
The best materials for gaming desk mats enhance performance, comfort, and durability.
- Cloth: Cloth desk mats are popular for their smooth surface and comfortable feel. They provide excellent control for both optical and laser mice, making them ideal for gaming sessions and long hours of use.
- Plastic: Plastic desk mats offer a hard surface that allows for swift mouse movements and precision. They are easy to clean and maintain, making them a practical choice for gamers who value speed and responsiveness.
- Rubber: Rubber mats provide a non-slip surface that keeps the mat in place during intense gaming. They also offer a good amount of cushioning, which helps reduce wrist fatigue over extended gaming periods.
- Glass: Glass desk mats present a sleek, modern aesthetic and a smooth surface for high-speed mouse tracking. While they are less common, they are durable and easy to clean but may require a mouse designed for glass surfaces.
- Hybrid Materials: Some gaming desk mats combine different materials, such as a cloth surface with a rubber base. These hybrid designs aim to offer the best of both worlds, providing comfort, speed, and stability for gamers.
What Features Can Enhance Gaming Performance in Desk Mats?
Several features can significantly enhance gaming performance in desk mats:
- Surface Material: The best desk mats for gaming often use materials like cloth, plastic, or hybrid surfaces that provide a balance of speed and control. A smooth surface can facilitate quick movements, while a textured finish might enhance precision for more detailed gaming tasks.
- Size: A larger desk mat can accommodate a wider range of mouse movements, making it ideal for gamers who require extensive swiping actions. It also provides ample space for both mouse and keyboard, reducing the chance of accidental slips or misalignments during intense gameplay.
- Non-Slip Base: A non-slip rubber base is crucial for ensuring that the desk mat stays in place during vigorous gaming sessions. This feature helps maintain stability, allowing gamers to focus on their performance without worrying about repositioning their mouse pad.
- Edge Stitching: Desk mats with stitched edges prevent fraying and enhance durability over time. This feature not only contributes to the longevity of the mat but also helps maintain a smooth surface for mouse movements, especially in high-friction areas.
- Wrist Support: Some desk mats come with built-in wrist support or ergonomic designs that help reduce strain during long gaming sessions. This feature can enhance comfort and prevent fatigue, allowing gamers to play for extended periods without discomfort.
- Customizable Designs: Many gaming desk mats offer the option for customization, allowing gamers to personalize their setups with unique designs or RGB lighting. Aesthetically pleasing mats can enhance the overall gaming experience and reflect personal style.
- Water-Resistant Coating: A water-resistant coating can protect the desk mat from spills and sweat, ensuring it remains functional and easy to clean. This feature helps maintain the mat’s performance and appearance, which is particularly important for intensive gaming environments.
How Does Texture Influence Mouse Accuracy?
Texture plays a significant role in determining mouse accuracy, especially in gaming scenarios where precision is crucial.
- Surface Material: The material of the desk mat can drastically affect how the mouse sensor reads movement.
- Texture Type: Different textures, such as smooth or rough, influence the friction between the mouse and the surface.
- Consistency: A uniform texture across the mat helps maintain consistent tracking performance.
- Micro-Patterns: Some mats feature micro-patterns designed to enhance tracking speed and accuracy.
- Durability: The durability of the texture affects long-term performance, ensuring that the mat maintains its accuracy over time.
Surface Material: The desk mat’s surface material can impact the way the mouse sensor interacts with it. For instance, a hard plastic surface may allow for faster movement, while a cloth surface may provide more control, which can be beneficial in different gaming situations.
Texture Type: The texture type determines the amount of friction experienced during mouse movements. A smooth surface is typically preferred for high-speed gaming, allowing for swift swipes, while a textured surface offers more control, which can be advantageous in precision tasks.
Consistency: A desk mat with a consistent texture across its entire surface ensures that the mouse behaves predictably regardless of where it is used on the mat. Inconsistent textures can lead to erratic tracking, which may negatively affect gameplay.
Micro-Patterns: Micro-patterns are designed to enhance the mouse’s ability to track movement accurately. These patterns can help with both speed and control, providing a balance that caters to various gaming styles, from fast-paced shooters to strategy games requiring precision.
Durability: The durability of the desk mat’s texture influences its long-term performance. A mat that wears down quickly may lose its effectiveness, leading to decreased accuracy and inconsistent tracking, which can be frustrating for gamers who rely on precision over extended periods.
Why Is Edge Stitching Essential for Durability?
Edge stitching is essential for durability because it reinforces the edges of materials, preventing fraying and wear over time, which is particularly important for desk mats that experience constant movement and pressure from gaming activities.
According to a study published in the Journal of Textile Science, edge stitching significantly increases the lifespan of fabric products by distributing stress more evenly along the perimeter, thereby reducing the likelihood of damage. This is especially relevant in gaming environments where desk mats are subjected to frequent mouse and keyboard usage, leading to potential abrasion.
The underlying mechanism involves the interlocking of fibers at the edges, which stabilizes the fabric and prevents unraveling. When a desk mat is used extensively, the corners and edges are often the first areas to show wear. By incorporating edge stitching, manufacturers create a barrier against the daily wear and tear that can occur, thus ensuring a longer-lasting product. Moreover, this technique also maintains the aesthetic integrity of the desk mat, as it prevents unsightly frayed edges that could detract from its visual appeal in a gaming setup.
What Are the Most Popular Gaming Desk Mat Brands?
The most popular gaming desk mat brands include:
- SteelSeries: Known for its premium quality and performance-oriented designs, SteelSeries offers a range of gaming desk mats that cater to both casual and competitive gamers. Their mats are designed with a smooth surface for precise mouse movements and often feature anti-slip rubber bases to keep them securely in place during intense gaming sessions.
- Razer: Razer’s desk mats are crafted with gamers in mind, combining aesthetics with functionality. They often come with customizable RGB lighting options, allowing users to match their setup, and are made from durable materials that enhance mouse tracking and comfort during extended play.
- Corsair: Corsair desk mats are recognized for their durability and large surface areas, making them ideal for gamers who require ample space for both keyboard and mouse. They typically feature anti-fray edges to prevent wear over time and come in various designs, including RGB lighting options that sync with other Corsair peripherals.
- HyperX: HyperX offers gaming desk mats that emphasize comfort and control, often equipped with a soft cloth surface for optimal mouse tracking. Their products are also designed to be portable and easy to clean, appealing to gamers who attend LAN events or tournaments.
- Logitech G: Logitech G’s desk mats are designed to complement their gaming peripherals, featuring a high-quality surface that enhances the performance of all types of gaming mice. They are available in various sizes to accommodate different setups and are known for their durability and ease of maintenance.
- Glorious PC Gaming Race: This brand has gained popularity among gamers for its large, customizable desk mats that offer a smooth surface for improved accuracy. They are available in various designs and colors, allowing users to personalize their gaming setups while providing a high level of performance.
How Do Razer and SteelSeries Desk Mats Compare?
| Feature | Razer Desk Mats | SteelSeries Desk Mats |
|---|---|---|
| Material | Made from durable cloth for smooth gliding and comfort. | Utilizes a textile surface for precision and a rubber base for stability. |
| Size Options | Available in various sizes, including large formats for extensive setups. | Offers multiple sizes, including extended versions for keyboard and mouse. |
| Price | Typically ranges from $20 to $50 depending on size and features. | Prices vary from $15 to $60, with premium options available. |
| Special Features | Some models include RGB lighting for customization and aesthetics. | Many mats are designed with anti-fray stitching and are washable for easy maintenance. |
| Weight and Portability | Lightweight design for easy transport. | Moderate weight, suitable for stationary use. |
| Surface Texture and Grip | Smooth texture for fast-paced gaming. | Textured surface for enhanced grip during gameplay. |
| Warranty Information | Typically offers a 1-year warranty. | Standard 2-year warranty on most products. |
Which Desk Mats Are Highly Recommended by Gamers?
Gamers often seek desk mats that enhance their gaming experience through aesthetics, functionality, and durability.
- Glorious 3XL Extended Gaming Mouse Mat: This oversized mat provides ample space for both keyboard and mouse, allowing for seamless movements during intense gaming sessions.
- Razer Firefly V2: Featuring customizable RGB lighting, this mat not only enhances your setup’s aesthetics but also offers a smooth surface for optimal mouse tracking.
- HyperX Fury S Pro SE: Known for its anti-fray stitching and densely woven fabric, this mat ensures durability while providing a comfortable and precise surface for gaming.
- SteelSeries QcK Prism Cloth: With its RGB illumination and dual-sided design, this mat caters to various preferences while maintaining excellent tracking performance.
- Corsair MM300 Extended: This mat combines a textile-weave surface for precision control and a rubberized base to prevent slipping, making it ideal for competitive gaming.
The Glorious 3XL Extended Gaming Mouse Mat is especially favored for its size, accommodating large mouse movements and multiple peripherals without constraint. Its smooth, non-slip surface enhances precision, making it a top choice among gamers who require extensive space and reliability.
The Razer Firefly V2 stands out due to its RGB lighting features, which can be synchronized with other Razer products, adding a visually stunning element to any gaming setup. Its micro-textured surface ensures excellent tracking, making it suitable for both casual and competitive gaming.
HyperX Fury S Pro SE is recognized for its durability, featuring a stitched border that prevents fraying and extends the mat’s lifespan. The smooth surface allows for fast and accurate mouse movements, catering to gamers who value precision and reliability.
SteelSeries QcK Prism Cloth offers versatility with its dual-sided design, allowing gamers to switch surfaces according to their preferences. The vibrant RGB lighting adds a personalized touch while the fabric is optimized for both speed and control, making it a favorite among professional eSports players.
The Corsair MM300 Extended combines functionality with comfort, providing a large surface area that supports extended gameplay without interruptions. Its anti-slip rubber base ensures stability during intense moments, making it a dependable choice for serious gamers looking for performance and durability.
What Are the Best Desk Mats Based on User Reviews?
The best desk mats for gaming have been highly rated by users for their quality, durability, and functionality.
- SteelSeries QcK Gaming Surface: This desk mat is praised for its smooth surface and excellent tracking capabilities, making it a favorite among gamers. It’s available in various sizes, ensuring that it fits well on any desk while providing ample space for mouse movement.
- HyperX Fury S Pro Gaming Mouse Pad: Users love the HyperX Fury S for its thick, plush design that offers comfort during long gaming sessions. Its anti-fray stitching enhances durability and allows it to withstand heavy use without showing wear and tear.
- Razer Firefly V2: This RGB-enabled desk mat stands out not just for its performance but also for its customizable lighting effects that sync with other Razer devices. Its micro-textured surface ensures precise tracking, while the anti-slip rubber base keeps it firmly in place during intense gaming moments.
- Corsair MM300 Extended Gaming Mouse Pad: Known for its large size, the MM300 provides plenty of room for both mouse and keyboard, making it ideal for gamers who utilize multiple peripherals. Its durable construction and anti-fray edges help maintain its shape and aesthetics over time.
- Glorious PC Gaming Race Mouse Pad: This desk mat is loved for its simplicity and high-quality cloth surface that allows for both speed and precision. With a variety of sizes and colors available, users appreciate its clean design and the fact that it’s easy to clean, maintaining a high-performance gaming setup.
Which Desk Mats Offer the Best Value for Money?
Lastly, the Corsair MM300 Extended combines a smooth surface with a non-slip base, ensuring that it stays in place during intense gaming. Its large size gives gamers enough room for sweeping mouse movements without running off the edge.
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