Just like our heavy-duty Water Trapper doormats, these stair treads have a tri-denier fiber system that will help collect water, mud, and debris. The thick fibers do the scraping, and the thin fibers do the wiping-stopping dirt in its tracks! The unique border allows water to drain from all sides. Stair treads have strong rubber backing for traction on all surfaces-great for garage, porch, or basement steps. Rug fibers made from PET, post-consumer recycled material-which equates to a minimum of five, 16-oz. plastic bottles per square foot-creating demand for recycled materials and reducing waste. Hose off to clean. Shipped to contiguous 48 states only. Express shipping/gift packaging not available. Made in USA. Not recommended for use with underfloor heating. Set of four. 76cm W x 22cm D.