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.The S.O.S. Strap has 2.75" By 11" Neoprene pad with non-skid surface and 1.5" Metal swivel hooks and webbing. It's adjustable from 20" - 68" (50, 8cm- 172, 7cm). The recommended load for carrying is up to 30 lbs (13, 6kg). The S.O.S. Curve strap is the same as the S.O.S. Strap except that it has a slight curve to the neoprene pad allowing the strap to rest more securely on the shoulder. It is adjustable from 22" - 70" (55, 9cm - 177, 8cm). The recommended load for carrying is up to 30 lbs (13, 6kg). The Mini S.O.S. Strap has a slightly smaller Neoprene pad (2.25" By 10") with non-skid surface and uses 1" Webbing with metal swivel hooks. The Mini S.O.S. Strap does not come in the color nature. It is adjustable from 20" - 52" (50, 8cm - 132, 1cm). The recommended load for carrying is up to 25 lbs (11, 33kg).