The Lunar Concepts "Prison Pocket" fits onto any 1" wide webbing and the perfect size pouch to stash those little extras. Whether it's a spare charging cable or some chapstick on your bag strap, or some spare batteries on your sling, the prison pocket will have your back. The top of the pocket measures approximately two inches at the opening and tapers to approximately one inch at the bottom. The pouch can easily hold 2 CR123 batteries, 2-3 AA batteries, and 4 AAA batteries just to give you an idea of the size. What you carry is only limited by your imagination. Hook and loop closure for the pocket and soft loop on the back to attach to 1" webbing. Made from heavy duty cordura nylon, the "Prison Pocket" is built to last.