The optech sos curve strap has been designed for heavy gadget bags briefcases computer bags and general luggage replacing the often inflexible and uncomfortable straps supplied as standard the sos strap saves on shoulders with its unique internal control stretch system and tailored design is the perfect strap for heavy bags and cases the metal swivel snap hooks that secures the strap to most bags and cases can be easily removed if the 1 webbing is the preferred connection option the