Go green in the office with this chairmat that's made from renewable plant-based resources to provide a natural alternative to petroleum-based vinyl mats. Free and Clear formula offers exceptional clarity without any harsh chemicals. Easy-glide rolling surface allows you to move your chair freely when needed. Studded bottom grips securely to your carpet to prevent it from sliding. Chairmat without a lip is designed for occasional use on commercial pile carpets up to 1/4" thick.