4 Pack Universal Hydration Valve Cover

Individual sheaths: 3.6 cm long, 1.8 cm max outer diameter, wall thickness 1.2 mm; total set weight 22 g. Manufactured from platinum-cured silicone meeting REACH and LFGB safety requirements — inert, hypoallergenic, and fully recyclable at end-of-life. Installs in seconds: remove old sheath by gentle twisting/pulling, then slide new one fully onto tube until seated against inner post — no glue, heat or tools required. Verified fit across hydration platforms using 8–10 mm OD tubing and standard 6 mm inner posts, including Hydraulics, CamelBak Crux, Platypus Big Zip SL, and Osprey Hydraulics LT. Engineered for active users who demand silent operation, zero drip when inverted, and fatigue-resistant elasticity during sustained use on multi-hour rides or climbs.