I make the 50-inch Nitz Strap V2 neck strap from Type III Commercial Grade 550 parachute cord. There are seven inner strands, each made from twisted pair nylon. This camera strap is mildew and rot resistant, which is further complimented by hardware that is rust and corrosion resistant. These camera straps will support anywhere from 10-150 pounds, depending on the configuration requested. This all adds up to a camera strap that is ready to keep your gear secured while you capture the light. Oh, and this is made from materials completely sourced in the USA!