Overview
Listed on Amazon as 大きなゲーム用マウスパッドアニメ夜空星カスタムデスクパッド大きなマウスパッド滑り止めゴムベースステッチエッジマウスマットオフィス/コンピュータ作業/ゲーム用ポータブルデスクマット 31.5×15.7インチ, this is an 800×400×3mm cloth desk mat sold under the Jasuine brand.
An anime-style night sky full of stars covers the whole surface, and it is large enough to hold your keyboard and mouse on a single mat. In short, it suits people who want to cover their desk with one mat and change its look.
It is not the first pick for competitive players who want precise control over glide.
The surface is fine cloth with a waterproof coating, the base is non-slip natural rubber, and the edges are stitched. As of October 2, 2026, the Amazon.co.jp listing showed 4.8 out of 5 stars from 323 reviews, a high rating for a large printed desk mat.
That rating also reflects how happy buyers are with the design and size, so it does not measure glide alone.
Compatibility Guide
The mat needs no power or cables, so it has no compatibility issues with any PC or OS. Before you buy, check three things: whether it fits your desk, whether there is enough room for your mouse next to your keyboard, and whether it works with your mouse sensor.
Desk Fit
At 800×400mm, it fits across a typical PC desk that is 1000-1200mm wide. Because it is 400mm deep, a desk 600mm deep or more still leaves space in front of the monitor stand.
On desks narrower than 800mm or only about 450mm deep, the edges will hang over, and your arm may catch on the overhang. Measure your desk first, and check how far forward your monitor stand's feet reach.
Width Left Beside Your Keyboard
| Keyboard type | Typical width | Approx. room left for the mouse |
|---|---|---|
| Full-size | ~440-460mm | ~340-360mm |
| Tenkeyless | ~350-370mm | ~430-450mm |
| 60-65% | ~290-320mm | ~480-510mm |
Keyboard widths vary by model, so treat these figures as estimates. Even with a full-size board, about 340mm is left for the mouse, which is plenty for office work and for gaming at medium to high sensitivity.
Low-sensitivity FPS players who swing their whole arm will feel less cramped with a tenkeyless or smaller board, or with a mat at least 900mm wide.
Mouse Compatibility
The listing says it works with both optical and laser mice. Cloth generally works well with most mouse sensors.
Full-surface prints have strong light and dark areas, though, and in rare cases that can make sensor tracking unstable. When the mat arrives, move your mouse over both dark and light parts of the print and make sure the cursor does not jump.
What 3mm Thickness Means
For a cloth pad, 3mm is standard to slightly thin. It has less cushioning than 4-5mm pads, but a keyboard placed on top sinks less and stays steadier while you type.
If you plan to cover the whole desk, this thickness is easy to live with.
Product Info
| Item | Details |
|---|---|
| Dimensions | 800×400×3mm (31.5×15.75×0.12 inches) |
| Thickness | 3mm (0.12 inches) |
| Material | Natural rubber base + fine cloth surface |
| Features | Non-slip rubber base, stitched edges, waterproof coating |
| Price | ¥5,631 (Amazon.co.jp, as of Oct 2, 2026) |
| Rating | 4.8/5 from 323 reviews (as of Oct 2, 2026) |
As of October 2, 2026, Amazon.co.jp listed the mat at ¥5,631.
Prices change with sales and seller changes, so check the product page for the current price before you buy. We could not find a stated warranty period, and the listing mentions nothing in the box besides the mat itself.
If the mat arrives defective, you will be relying on the retailer's return policy.
The title says 31.5×15.7 inches and the spec sheet says 15.75 inches.
The difference comes only from rounding 400mm to inches; both describe the same size.
What to Know When You Start Using It
Large cloth mats usually ship rolled up, so the edges often curl when you first unpack them. Lay the mat flat, put something heavy such as books on it, and leave it for a day or two; that usually fixes it.
Natural rubber bases can also smell when new. If the smell bothers you, leave the mat spread out in a well-ventilated room for a few days.
Think of the waterproof coating as giving you time to wipe up a spill before it soaks in. If liquid is left sitting, it can seep in through places such as the stitched edges.
Cloth mats collect skin oil and sweat, so you will need to wash it now and then. The usual method is to press-wash it in lukewarm water with mild detergent and let it air-dry out of direct sun.
Scrubbing the printed surface hard may fade the colors. Check the product page to see whether it can go in a washing machine or dryer.
Comparison with Alternatives
Other large anime-print mats include the RISOKA and KINPLE models, both 900mm wide. This mat is 100mm narrower.
A simple way to choose: take this one if your desk is short on width, or a 900mm-class mat if you play at low sensitivity and want as much width as possible. KINPLE lists its thickness as 0.1 inch (about 2.5mm), a little thinner than this mat's 3mm.
If you want lighting or extra features, a large RGB pad such as Corsair's is another option, but its price range and purpose are very different. This mat's appeal is getting the design and the size at a modest price.
Best Use Cases
- People who want one mat for the whole desk: The keyboard and mouse share a single mat, so you protect the desktop from scratches and get a uniform look at the same time.
- Fans of night-sky and starry anime artwork: The print covers most of the desk and clearly changes how your setup looks. It also works as a gift for someone who likes this style.
- Medium- to high-sensitivity gamers and office users: Even next to a full-size keyboard, about 340mm is left for the mouse.
- People who want a mat under their keyboard too: At 3mm it is not too thick, so a keyboard on top does not sink much.
On the other hand, it does not suit people who prefer a plain, minimalist desk. Competitive players who want to choose a mat by its glide and stopping behavior should also look elsewhere.
Before You Buy
Do not expect competition-grade glide. No specific glide or stopping characteristics are published for this mat.
If you want to fine-tune your FPS aim, a pad from a gaming brand that publishes its surface characteristics is the safer choice.
Measure your desk first. 800×400mm is bigger than many people expect.
If the mat hangs over the edge, your arm may rest on an uneven edge, and the overhang can catch and pull the mat out of place.
The stitched edge forms a small ridge. The stitching prevents fraying and adds durability, but if your wrist rests on the edge, you may notice the slight ridge.
Placing the mat so the front edge sits away from your wrist helps.
Confirm the selected design and size. As the word カスタム (custom) in the title suggests, listings like this sometimes offer several designs and sizes.
Before ordering, check the images and size labels to make sure the night-sky design and the 800×400mm size are selected.
Watch for inconsistent listing data. In the source data for this article, the overseas price entry was labeled Amazon US, yet it linked to Amazon.co.jp and showed a yen price.
The Amazon disclosure below also names Amazon US as the seller and shipper. If you buy from Amazon Japan, check the product page for the actual seller and shipper, the delivery time, and the return terms.
Store listings can contain errors, so the surest check is to confirm the product from its images and title.
No warranty is stated. Unroll the mat as soon as it arrives and check for misaligned printing, frayed stitching, or a peeling rubber base.
If you find a problem, contact the seller within the return window.
FAQ
Q. Can I put my keyboard on it too? A.
Yes. At 800×400mm, about 340mm is left for the mouse even with a full-size keyboard on the mat.
At 3mm thick, the keyboard does not sink much.
Q. Is it washable? A.
Cloth mats are generally press-washed in lukewarm water with mild detergent and air-dried out of direct sun. Machine washing and drying are not mentioned, so check the product page.
Q. Is it big enough for low-sensitivity FPS? A.
For the mouse alone, 800mm of width is plenty. With a full-size keyboard on the same mat, though, the mouse gets about 340mm.
Players who swing their whole arm should pair it with a tenkeyless or smaller board, or consider a mat at least 900mm wide.
Q. The edges curled when it arrived. A.
That is common with large mats that ship rolled up. Lay it flat with something heavy on top for a day or two; that usually fixes it.
Q. It is waterproof, so is spilled coffee fine? A.
Only if you wipe it up right away. If it sits, liquid can seep in, especially around the edges.
Product Disclosure (Amazon)
- Manufacturer: Jasuine
- Seller: Amazon US
- Fulfilled by: Amazon US
- ASIN: B09WLP6N8B
- Note: This article covers a manufacturer-made product based on Amazon listing details.
