Waterhog Medium Blue 2 Tread Set Brick Pattern Stair Treads Treads boast rubber-reinforced, crush-resistant nubs in four different patterns. Protect stairs from damage caused by mud, sand, water and grime with these Waterhog stair treads. Each stair tread is 8.5" x 30". Made of fast-drying materials and are easy to clean by shaking or hosing down. Low-profile design allows door to swing over the treads without catching. Nitrile rubber underside keeps stair treads in place.