Help stop the spread of germs in your office Made of PVC material. Doesn't contain phthalate plasticizers for safe use. Antibacterial technology helps minimize the growth of bacteria. Gripper back. Suitable for use on hard floors or standard-pile carpets up to 3/8in. thick. Back features a smooth finish for use on hard floors. Greener choice - contains 25% postconsumer recycled content. Made by Floortex.