Features: Double-wall vacuum insulation maintains long-lasting cold performance Lightweight design for easy carrying on any ride Keeps beverages cold for up to 18 hours No-squeeze operation-simply lift and sip 18/8 stainless steel construction for durability without metallic taste High-flow cap provides smooth, effortless drinking Leakproof lockout prevents spills during transport Optimized cage fit compatible with most bike bottle cages Additional Details: CamelBak Products, LLC ("CamelBak") has built its reputation by engineering products that exceed consumer expectations for quality and durability. The Got Your Bak(TM) Lifetime Guarantee covers all reservoirs, backpacks, bottles, coolers, drinkware and accessories from manufacturing defects* in materials and workmanship for the lifetime** of the product.