Rubber-Cal "Diamond-Plate Non-Slip Rubber Tread Stair Mats (6 Pack), Black Each pack includes 6 individual step mats made from rubber Rubber stair mats install quickly with the use of double-sided tape Rubber is an ultra-durable material that can be used indoor or outdoor Improve stair safety by adding rubber step mats and reduce liability Diamond-plate design is a much-loved aesthetic that appeals to residential and commercial use