Outdoor Safety Stair Treads Outdoor stairs & steps require special protection from all kinds of weather, & these outdoor safety stair treads provide the perfect solution for every set of stairs. The durable patented PVC surface is sprinkled with PVC granules to provide a rough walking area that repels moisture & breaks up the formation of ice crystals. The durable material provides resistance against rot & inclement weather, insulates from electrical contact, & dampens the sound of impacts. patented safety walking surface breaks up the formation of ice crystals & repels moisture no additional de-icing measures necessary These safety stair treads are equipped with a technologically advanced adhesive tape that resist moisture & frost; the stair treads even bond with surfaces that are exceptionally smooth, such as sealed granite. For the best bonding results the safety stair treads should be applied to a clean, dry surface under moderate temperatures; in cold weather, the tape may be heated with a hair dryer during application. Easily cleaned with ordinary equipment, the material may be trimmed to customize its fit against the step. The safety mat may also be attached directly into the stair with a screw fix combination. It is available in two different sizes. The long lasting PVC construction of these outdoor safety stair treads has received safety certifications from the Institution for Occupational Safety & the Swiss Council for Accident Prevention, among others.