Corsair MM300 Extended
By Corsair · Computer Mice · Desk & Streaming Setup · More from Corsair
- 930 x 300 x 3 mm
- Textile-weave cloth surface
- Stitched anti-fray edges
- Anti-skid rubber base
- Optimized for laser and optical mice
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Summary
A 930 × 300 × 3 mm cloth desk mat with stitched edges and a rubber anti-slip base that fits a keyboard and mouse on one surface. Check whether 300 mm depth is enough for your mouse travel before buying.
Strengths
- 930 mm width accommodates a keyboard and extensive mouse space in independent hands-on tests
- Smooth glide with sufficient stopping resistance; no tracking errors observed in game testing
- Rubber backing keeps the mat in place during use across multiple reviewer tests
- Stitched perimeter limits edge peeling; cloth surface is comfortable for wrist contact
- Black/gray graphic pattern masks visible grime and dust in long-term owner reports
- Zero running costs: no power, software, subscriptions, or proprietary consumables
Weaknesses
- 300 mm depth is shallower than 40–41 cm alternatives (Razer Gigantus V2 XXL, Logitech G840)
- Noticeable new-rubber odor out of the box; some reviewers needed several days of airing
- No manufacturer spill-proof coating; liquid spills soak into the cloth
- Surface feel can change after years of use and washing; one seven-year owner reported different glide after first wash
- Stitching reduces but does not eliminate long-term fraying/peeling risk; no official replacement parts exist
- Cleaning requires lifting keyboard and peripherals; machine washing is not in manufacturer guidance
Verified specifications
| Dimensions | 36.6 × 11.8 × 0.12 in (930 × 300 × 3 mm) |
|---|---|
| Weight | 0.519 kg per Corsair US listing |
| Surface | black/gray graphic, woven micro-weave cloth, stitched anti-fray perimeter |
| Underside | natural rubber, textured for anti-slip |
| Compatibility | optical and laser mice; no electronics, drivers, or software required |
| Warranty | 2 years (Corsair US, August 2026 policy) |
| No spill-resistant coating on this model (that feature is on the MM300 PRO Extended CH-9413641-WW) | |
Full research notes and sources
Depth and desk fit
The 300 mm front-to-back depth is the main fit constraint. It covers the area under a standard keyboard but leaves less mouse travel room than 410 mm mats like the Razer Gigantus V2 XXL (940 × 410 × 4 mm) or Logitech G840 (900 × 400 × 3 mm). You need at least 93 cm of clear desk width. If your workflow needs more mouse runway, the deeper alternatives are worth the higher price.
Odor, cleaning and long-term wear
Corsair’s cleaning guidance (September 2025) calls for a soft brush, then a damp cloth with mild soap after spot-testing, followed by full air-drying — machine washing is not recommended. One owner reported a seven-year-old mat looked cleaner after washing but no longer felt the same; another described five years of wear before replacing. No controlled test measures how washing affects friction or adhesive life.
Repairs, parts and running costs
No mandatory ongoing costs — it is a passive cloth/rubber mat. No replaceable pads, covers, feet, or proprietary consumables exist. Corsair’s warranty policy says it does not provide replacement parts directly to consumers. If the mat wears out or is damaged, whole-pad replacement is the only option: $16.99 sale / $29.99 regular at Corsair US (October 2026), $29.99 at Walmart. An illustrative amortized cost at $17–30 replaced every 3–5 years is roughly $3.40–10/year, but this is a budgeting assumption, not a documented lifespan. Owner experiences span five to seven years before replacement.
- Corsair US: $16.99 promotional / $29.99 regular (alternated September–October 2026)
- Walmart: $29.99 (sold and shipped by Walmart.com)
- Micro Center: $16.99 reduced from $32.99 (store-specific, must recheck stock)
- CDW: $39.99 (poor value vs. Corsair direct sale)
- Pangoly tracked $16.99 sales in 2026 and a $12.99 low at Corsair in December 2025
Buy at $17 or less if 930 × 300 mm fits your desk; $18–24 is acceptable but less compelling. At $30 or above, compare the MM300 PRO Extended at $29.99 for spill resistance (though one owner found it slower), or deeper mats: Razer Gigantus V2 XXL (940 × 410 × 4 mm) and Logitech G840 (900 × 400 × 3 mm, $39.99 direct in 2026). These are editorial thresholds, not manufacturer price promises.
Which model this is
This page covers the original Corsair MM300 Anti-Fray Cloth Gaming Mouse Pad — Extended, SKU CH-9000108-WW. Do not confuse it with the MM300 PRO Extended (CH-9413641-WW), which adds an advertised spill-resistant coating and is a different surface — a Reddit owner who tried both found the PRO much slower. The Amazon listing for this model is ASIN B01E6AOVYC (verify at checkout; marketplace listings can merge variants).
Sources
Manufacturer:
- Corsair MM300 Extended product page and specifications
- Corsair — How to Clean Your Non-RGB Mousepad
- Corsair Limited Warranty terms (August 2026)
- Corsair MM300 PRO Extended product page (different model)
Independent reviews:
Owner reports:
Parts and stores:
