Dimex Chair Mats offer the best overall quality home and office chair mat available on the market today. Designed to provide industry leading clarity, Dimex Chair Mats offer superior wear resistance and a surface that allows chairs to move freely. Replacing or repairing floors can be expensive. Protect your investment with a durable chair mat that is engineered to protect your floor from wear due to the wheels of your office chair rolling back and forth over time. Perfect for all low pile carpets with a 1/4 in. loop or less, including modular carpet tiles, woven rugs, and berber carpet. Not recommended for medium or high pile carpet, or hard floors. TIP: To determine the thickness of your carpet pile, place a penny on its edge down in the carpet pile (like measuring a tire tread). If Lincoln’s chin is above the carpet pile, your carpet is 1/4 in. or less.