The Marsupial Gear Universal Shoulder Strap Pocket is a modular stretch pocket that attaches to a wide variety of backpack shoulder straps. With the use of quick connect gatekeeper clips, the pocket is able to be secured to vertical 1" webbing on backpack shoulder straps. Because of the unique design, the pocket is free floating so that it does not interfere with the sternum strap on most backpacks. The pouch is sized for most cell phones and other handheld devices of similar size. Durable stretch material is utilized to fit a wide variety of objects while maintaining a snug fit for security. Utilize the valuable space on your backpack straps for additional storage and modularity!