Each ramp has a special textured surface to increase friction and prevent slippage. The sturdy base structure makes our ramp more stable and not easy to move during use. Designed to allow the sweeping robot, skateboarding, wheelchair and more to travel safely on uneven ground or doorway. Features -Color:Black -Material:Rubber -Size:49.00X22.00X6.00cm/19.26X8.65X2.36in -Portable ramp for lightweight and strong, anti-skid, can give you more convenience to use. -The material is rubber, which has excellent abrasion resistance and is not easy to deform. -The rubber ramp surface is designed with anti-skid surface, which increases the friction force, good anti-skid effect. -Used for filling up ramps, suitable for indoor steps and door steps, with good anti-skid function. -Thickened triangle on the side, sturdy and strong, not easy to deform. Can be used for a long time. Package list: 1 x curb ramp