Description: FUNCTION: Backpack Chest Strap prevents the backpack shoulder straps from sliding by keeping them securely in place ADJUSTABLE: Backpack Sternum Strap is adjustable in length(32 cm-54 cm/12.60 inch-21.26 inch). You can adjust it to the expected length QUALITY MATERIAL: Backpack Chest Belt is made of quality Imitation nylon, pp, and iron material, this chest strap is designed to withstand heavy use EASY TO USE: Backpack Strap Keeper is easy to buckle and unbuckle. Suitable for most backpack straps and people of all sizes GREAT BACKPACK ACCESSORIES: Good replacement to change your damaged waist or chest strap Specification: Material: Imitation Nylon Pp Iron Size Chart: Stretchable Length Range: 32 cm-54 cm/12.60 inch-21.26 inch 54 cmx2.5 cm/21.26 inchx0.98 inch Fixed Buckle Width 3.3 cm/1.30 inch Package Includes: 1x Backpack Chest Strap Note: Please allow slightly errors due to manual measurement and different monitors.