These require a cleated (spiked) backing to "grip" the carpet and prevent shifting.

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

Choosing the right chair mat depends primarily on your and how much you’re willing to invest in durability . High-quality mats prevent floor damage, reduce leg fatigue by easing chair movement, and can even prevent static buildup in dry months. 1. Identify Your Floor Type

Thinner mats (economy or regular) are usually sufficient.

The backing of the mat is the most critical feature to match to your flooring.