Add Functionality for More Fun: Backpack Hip & Chest Straps As Well As Laptop Protector Pouch. : 5 Steps - Instructables
Backpack Chest Strap - Trakke
Keeping Gear Handy on the Trail with Multi-Use Accessory and Utility Pouches - Backpacking Light
Amazon.com: HDHYK[2 Pack] Backpack Chest Strap Heavy Duty Adjustable Backpack Sternum Strap Chest Belt Suitable for Webbing on The Backpack up to1in.(Black) : Sports & Outdoors
UK Made Backpack Universal 25mm Webbing Add On Replacement Chest Sternum Strap | eBay
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
Amazon.com: HDHYK 4 Pack Backpack Chest Strap Heavy Duty Adjustable Backpack Sternum Strap Chest Belt Suitable for Webbing on The Backpack up to1in.(Black/Brown/Red/Orange) : Sports & Outdoors