USE INDOOR OR OUTDOORS - SAFE & SKID FREE ON ANY FLOOR SURFACE - Reduce risk of slipping or falling and protect your staircase with skid-resistant, quick-drying staircase treads. Suitable for indoor or outdoor use. Safe on any floor surfaces | CAPTURES AND HOLDS UP TO 1.5 GALLONS OF WATER PER SQUARE YARD - Exclusive "Water Dam" holds up to 1.5 gallons of water per square yard of fabric. Ridged Floral design and rubber border keep water and debris on the stair treads | 100% USA MADE, ECO-FRIENDLY QUALITY CONSTRUCTION - Premium PET fiber surface, made with up to 94% recycled materials. High-grade construction stands up to extreme elements. Durable rubber backing is made of 20% recycled SBR rubber (Styrene Butadiene Rubber) | DETAILS - Set of 4 treads each measuring 30-inches long by 8-1/2-inches wide by 3/8-inches high; treads are shipped rolled and flatten quickly once unpackaged | DURABLE & EASY TO CLEAN - Ensure all flooring surfaces are clean and dry before application; for maximum traction in high-traffic areas, add double-sided tape to ensure secure support where needed. Shake or vacuum to remove loose dirt, hose clean, and line dry