Engineered for worker safety, tough durable KONETA Nyracord® Anti-fatigue Smooth, Perma Walk® and Cross Rub Runner Mats offer excellent resistance to foot traffic, forklifts, and wheeled carts. Long-lasting construction features a combination of rubber and speciality resins that offer maximum anti-fatigue support, as well as chemical-resistance. Withstands extreme heat and cold. Not recommended for greasy or oily areas. Smooth Runner has a smooth top and bottom. Cross Rib surface features deep cross ribs; underside is ribbed. Perma Walk® features ribs running the full length of the mat and a knobbed underside. Made in USA.NOTE: Custom-cut mats up to 22' long are available, call a Certified Product Specialist to order.