Office Chair Mat For Carpet Floors Plastic Carpet Floor Protector Mat Studded With Lip For Home Office Desk Chair 3MM Clear 48"x36" Sturdy & Eco friendly: Made from long life PVC which will not crack, curl, discolor,No off-gassing - Odorless, no BPA, Phthalate free and free from volatile toxic compounds for a healthy indoor environment. Anti-slip: Studded back designed to achieve a strong grip w/no piercing or damaging your carpet banking to make sure the chair doesn't skid around. Effortless Roll: The unique surface texture allows your office chair to move smoothly and constantly easily while carrying out daily tasks,which helps to considerably reduce the risk of leg fatigue. Ideal For Carpets: Dimples on the back side of the mat,a rectangular lip to cover the carpet under your desk when your chair pushed all the way in, Our Gurantee: We Guarantee our customers 100% satisfaction.Chair wheels will not sink into a polycarbonate mat under correct use.If there are any problems, just email us.      Warm Note:This mat is suitable for short-haired hard carpet, the chair wheels can not move smoothly on the long-haired soft carpet.