A.B Crew 13pcs Stair Treads Rectangle Nonslip Carpet Stair Mats Rugs Pads Treads(Soulmate, 15.75"7.87") Material: Velvet Size: 15.75*7.87inch(40cm*20cm). Thickness: 0.31inch(0.8cm) High quality washable soft classic stair treads, durable to use. Humanization design, the back of carpet featured with non-slip dot. Application of space: Living room, staircase, hall, bedroom.