The S.O.S. Strap "Saves On Shoulders" with its unique internal control-stretch system and tailored design that effectively distributes weight and absorbs shock of movement. It"s the perfect strap for heavy bags and cases. The metal swivel snap hooks secure the strap to most bags and cases; however, they can be easily removed if the 1.5" (38,1mm) webbing is the preferred connection option. It is now available in three versions.