The CAP STRAP is a high-grade aluminum ring that screws through the threads of your water bottle. It seats just beneath the cap and provides a material advantage in durability and security. Unlike plastic alternatives, the CAP STRAP will never stretch, making it a dependable companion for both rigorous big wall climbs and everyday commutes. Designed to stay with you - wherever you are. Match the CAP STRAP to your style and ditch the duct tape and paracord and keep your bottle on hand and in reach.