4-1/2″ W x 1-3/4″ D, Length 6′. Polyester textile cover and closed-cell foam inner cushion, not vinyl, PVC or rubber. Cleans easily with liquid soap and a brush. Flexible enough to mount on curves or around corners. Will not deteriorate in the sun or mar your boat. Flexible tab (1″ wide) system allows standard top-of-dock or unique fold-over mounting which conceals the top row fasteners.