Koonmi 50 × 65 in Tempered Glass Chair Mat

Koonmi’s glass chair mat is listed at 50 × 65 inches, with a rectangular tempered-glass surface intended for carpet and hard floors. Its large clear footprint may suit a broad chair-rolling area, while the glass construction and reports of occasional sliding make placement and stability worth considering.

At a glance

The listed footprint is 65 inches long by 50 inches wide, with a listed thickness of 0.2 inches.
The manufacturer describes rounded, polished edges and a scratch-resistant surface.
A transparent surface leaves the floor visible beneath the mat.
The listing claims smooth chair rolling and carpet-floor protection.

Price

$206.99Save 10%

Reference price: ~~$229.99~~

Price checked: Nov 12, 2026

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Often bought together

Koonmi Glass Chair Mat for Carpet, 50"x65" Thick Office Chair Mat | Tempered Glass Chair Mats with Round and Polished Edges,

Pros and cons

Pros

Large rectangular footprint gives a chair more rolling area than a small mat.
Tempered glass is a rigid surface that the listing presents as suitable for carpet and hard floors.
Customer feedback reports smooth chair movement and favorable appearance.

Technical specifications

8 specifications

Identity
Brand	Koonmi
Model	chair mat

Dimensions and installation
Form factor	Rectangular
Dimensions listed	65"L x 50"W x 0.2"Th

Materials and protection
Material listed	Tempered Glass
Color	Transparent
Recommended surfaces	Carpet/Hard Floor
Maximum weight capacity	1200 pounds

What to know before buying

The listing gives a maximum weight capacity of 1200 pounds and makes durability, floor-protection, scratch-resistance and lifetime-warranty claims. These are manufacturer claims, not independently verified measurements or warranty terms. Customer feedback is mixed on stability, with reports that the mat may slide over time. Check placement and the full warranty terms before purchase.

Who is it for?

A good fit for

Buyers seeking a large, clear glass mat for rolling an office chair on carpet or hard flooring.
People who prefer a firm, wipe-clean surface and want the floor visible beneath a chair mat.

Less suited to

Buyers who need a flexible or cushioned mat rather than a rigid glass surface.
Anyone for whom a mat that may shift during use would be unacceptable.

Koonmi 50 × 65 in Tempered Glass Chair Mat · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 345 ratings

5 stars87%87%
4 stars6%6%
3 stars5%5%
2 stars0%0%
1 star2%2%

Customer feedback describes the mat as attractive and sturdy, and reports smooth, quiet chair movement, including on thick carpet. Some buyers describe it as worth the money. Stability is not consistent in the feedback, with reports both that the mat stays put and that it slides over time. That variation matters for a large rigid glass mat, so consider how securely it can sit in the intended area. Aggregate ratings are generally favorable, but do not establish why individual customers rated it as they did.

Positive themes

Customers report favorable appearance and smooth chair rolling.
Feedback mentions sturdiness and use on thick carpet.

Mixed feedback

Stability feedback differs, with some saying the mat stays firmly in place and others reporting that it slides over time.
Some customers consider it worth the money, but this reflects individual value judgments.