Function: This durable Rug Anti Slip Mat can effectively prevent the floor from being scratched, and at the same time has good anti-slip performance to protect the floor Floor Non Slip Mat can effectively prevent the floor from being scratched, and has good anti-skid performance while protecting the floor. Protect your carpet from damage from casters. The Non Slip Step Pads are transparent, allowing the rug to show through, while the chair rolls easily on hard surfaces. Bottom cleats secure mat to flat, low-pile rugs. It's made of 1/8" thick extra heavy duty tough vinyl and has a lifetime guarantee against cracking. Material:PVC Adopt high quality PVC material, safe and non-toxic, with non-flammability, high strength, resistance to climate change and excellent geometric stability Packing: 1.Roll Packing 2.Pallet Packing