4pcs Reusable Washable Rug Carpets Grippers Anti Slip Coner Rubber Mat Black Special Triangle shape design, it can firmly stick to any flat items without leaving any traces Can be repeatedly use and washed, it can protect your safety very well Material: Silicone; Colour: Black Single size: Approx. 5.83*4.21*4.21inch/14.8*10.7*10.7cm Package included: 4x Anti-skid pads, 4x Stickers, 1x English Manual