The Backpack Carry Expansion is the ultimate addition when transforming a holster into a on-the-go carry type. Attach to your bag for long hikes, hunting, or any outdoor activity. The Backpack expansion works perfectly with backpack straps, duffle bags, range bags, and others. The design was built to keep your firearm secured, and conveniently located, no matter what you're doing. /// The design is built with rigid polymer which increases grip strength when attached to straps to hold a secure position. When you holster your firearm, you will hear an audible click as it locks into place. You can customize your cant in 22 degree increments for a negative, vertical or standard FBI cant.