Strap ensures comfortable wearing to you. It not only can adjust tightness for safety, but also prevents damages on the wrists and ankles. The strap is made of superior and sturdy nylon, which can withstand 300lbs. Hard to break and odorless, allowing long time use. Durable nylon restraints withstand long time to use when you are dangerous outside. Keep yourself safe when having the outdoor games, activities or defense.