Thank you for viewing. Use this to prevent large rugs, mats, and kotatsu futons from slipping. Size: 150 x 150 cm, Beige Material: Polyester I used this on a flooring for about 2 years under a kotatsu futon, and it has been home-cleaned and stored at home. There is one stain that won't come out. I think it's probably spilled soy sauce. There was a big stain on the kotatsu futon too.