Wisdompro Backpack Chest Strap with Buckle is made of 1 wide Webbing, and resistant to rot. With Quick Release Buckle, it\'s easy to buckle and unbuckle. D rings are designed for attaching some light stuff. With adjustable length to fit most sizes, it keeps shoulder straps of your backpack securely in place, and gives your hands free. Definetly a g..