Designed to be worn like a Backpack Harness with two Cameras resting at each hip Blackline II Double can be taken apart and used as a Single Camera Sling Front and rear spring-loaded Cam-Locks on webbing help secure camera by each hip Features 2x Locking Swivel Carabiner ConnectR CR-3 Shoulder Pads consists of highly breathable Polyester Mesh, TPE (Thermoplastic Elastomer) Foam, and Polyester Air Mesh