Roll-up chairmat is made of 100 percent Anji Mountain bamboo for supreme durability. Bamboo is harvested in an eco-friendly manner from sustainable forests. Material is kiln-dried to the optimum moisture content to minimize cracking and warping. Chairmat is suitable for commercial grade carpet (up to 1/4" with carpet pad) or hard floors. Premium, nonslip felt backing keeps mat in place and protects your floors. Rounded edges allow easy access on and off the mat. Chairmat is finished with a premium, eco-friendly, UV-cured coating for ultimate protection. Simply roll up to transport. Soft polyurethane chair casters (sold separately) are recommended to minimize scratching and denting the surface of the mat.