Floortex Phthalate-Free Advantagemat provides long-lasting floor protection for the home and office, especially from carpet wear caused by chair casters. It is suitable for a wide range of uses. Unique Floortex Formulation provides a clear and durable PVC mat that is free from the phthalate plasticizers that have been banned from children's toys and medical instruments, making this PVC mat even safer to use. It is also free of tin, lead, cadmium and chemical content banned from child-related products. Gripper-back provides stability. Ergonomic design allows easy-glide movement and reduced leg fatigue. Chairmat is suitable on low-pile carpets up to 1/4" thick.