Requires extra thick mats with longer spikes to prevent "dimpling," which is when the chair sinks into the mat, making it impossible to roll. 2. Comparison of Materials Chair Mat Buyer's Guide - MyBinding.com
Thinner mats (economy or regular) are usually sufficient. CHAIR MATS
The backing of the mat is the most critical feature to match to your flooring. Requires extra thick mats with longer spikes to
These require a cleated (spiked) backing to "grip" the carpet and prevent shifting. CHAIR MATS
Look for a smooth-backed mat. Spiked mats will scratch or mar hard surfaces. Regular cleaning under the mat is essential to prevent trapped grit from acting like sandpaper.