This is a waterproof sheet designed to be placed on wheelchairs, chairs, sofas, car seats, etc. Size: 40 x 50 cm The size of a typical wheelchair seat is 40 x 40 cm, so this is slightly larger. If you place a cushion on top, it will cover the cushion. It is completely waterproof and will not soak through. The back is non-slip, so it won't easily slide when placed. Recommended for those who want to prevent odors from soaking into cushions or who are worried about accidents and want to take preventative measures. Color: Light Gray