Pepperell Parachute Cord is made of 100% Nylon, with a soft braided shell and an inner core. It is lightweight, quick drying, fusible, resistant to mildew and is extremely durable. Perfect for bracelets, harnesses, for tying items, and even survival situations. 325 Nylon 21ft Navy- Enough cord to make 2 standard bracelets. This cord has a 325 pound breaking strength, is durable yet cushioned, allowing the cord to be flexible, it typically measures 3mm or 1/8" in diameter.