How do I replace a sternum strap on my backpack? - iFixit Repair Guide
Amazon.com : Wisdompro Backpack Chest Strap, 3/4 inch Backpack Sternum Strap Chest Belt with Quick Release Buckle for Hiking and Jogging (Compatible with 1 inch Webbing Shoulder Strap) : Sports & Outdoors
BERGHAUS REPLACEMENT CHEST Sternum Strap Military Army use - Cedar Olive Green £10.99 - PicClick UK