Non-slip & Move steadily: The back of chair mat is made of upgraded version adsorbed material, ultra non-slip. So when using it, be sure to tear off the film on the back and stick it firmly on the hard floor to prevent it from bunching up. NOTE this chair mat can only be used on HARD FLOOR, not on carpet. And the surface is a soft loop-like fabric like a carpet. Effectively HARD FLOOR Protector: The floor mat prevents wear and tear on your wheels or floor, such as hardwood, tile, laminate, linoleum floors (NOT suitable for any carpets or half rug), and prolong their service life. It also help reducing the noise of rolling chair, even playing games or working at night will not affect the others. Premium Quality and Eco-Friendly Material: The chair mat size is 48x36 It is made of non-woven fabric, and layer PE film. No folding, non-curling, non-fading, odorless, pet friendly, non-toxic.There are slight creases when you first use it. You can easily unfold the chair mat, tear off the PE film on the back and place it on a clean floor. Smooth out the creases, let the mat perfectly fit the floor. In order to save space and protect the environment, the chair mat is folded for delivery. When it is used for the first time, there may be slight creases. Ironing with an iron will make the mat remove creases faster. Or you just need to follow the use steps (in the product description below) to stick it on the hard floor, it will recover flat completely.