Wisdompro Backpack Chest Strap, Heavy Duty Adjustable Backpack Sternum Strap Chest Belt with Quick Release Buckle for Hiking and Jogging - with Slide Locks Keeps shoulder straps of your backpack securely in place, and gives your hands free. Made of 1" wide Webbing, durable to use. Quick Release Buckle, easy to buckle and unbuckle. D rings for attaching some light stuff. Adjustable length from 4"-22", compatible with most sizes. Made of 1&#034; wideWebbing, durable to use and resistant to rot. Quick Release Buckle, easy to buckle and unbuckle. Keeps shoulder straps of your backpack securely in place, and gives your hands free. D rings for attaching some light stuff.