Keep your bag hugging your back with the Infinity Sternum Strap. The Infinity Sternum Strap is a completely removable sternum strap meant for the Infinity Daypack or other cinch sacks or bags with cords. The 'Dual Snap' system allows the sternum strap to be completely removable. Also built into this sternum strap is the 'Thru Pocket' - perfect for holding a pair of sunglasses.