AirCell -UAS55N Neoprene Black Comfort Shoulder Camera Laptop Bag Strap Shoulder Neck Strap Belt This strap consist of AirCell Suspension Pad and an elastic materials. It should be an extremely comfort with much less painful on the users shoulder from not interrupting a blood circulation from Air cushionning & no pressure on the space of each aircells and feels much lighter than real weight from bouncing movement on the easticity shoulder part. also, It does not slip off at all. The strap hook is available for almost every bag which can detach any strap from. Size : 94-124cm (37-48.8 inches) Recommended Weight : 7-8kg (16lb) Material : AirCell Pad+Neoprene