Material: solid rubber, resistant to scratching and weather. Surface: honeycomb. Underside: 3mm bumps (for draining the water) only for height 22 mm. Height: 18 or 22 mm. Colour: black. Base: closed, open. Characteristics: High cleaning power, tough and easy to clean; Particularly recommended for snowy and rainy areas .Custom production: in any size wanted; glued in several parts; in triangular, trapezium or round shape.