Yoke Sternum Chest Strap for Backpacks Rucksacks - The Yoke - Red Oxx Mfg - Red Oxx
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
The Importance of Using a Sternum Strap on a Backpack