This environmentally-friendly chair mat is made from 100% recycled PET (polyester terephthalate) and is also recyclable itself when it comes to the end of its life. The grippers on the underside of the mat make this version perfect for use on carpets by preventing it from slipping. It will protect your floor from damage caused by the castor wheels of your office chair and will also keep your wheels rolling smoothly without carpet getting stuck in the mechanism, a particular problem with deep pile carpets. The chair mat has a textured surface to ensure that it is slip resistant. The lip on the mat means that it will fit under a traditional double pedestal desk.