This Trail Running Gaiter is made with polyester and spandex focused on stretch and abrasion resistance. With this gaiter you are ready for anything the trail has for you. Features Abrasion resistant nylon blend fabric Secure Velcro tab compatible with Merrell Footwear Durable woven nylon for U-throat protection Hook and D-ring (or lace) compatible 75% Recycled nylon 25% Spandex