The first insulated cycling bottle with a flow rate designed by a NASA engineer—seriously. Thunder Mountain Bikes engraved edition keeps your drinks cold for 12+ hours with double-wall vacuum insulation, delivers fast hydration through a patented high-flow nozzle, and brings some Sedona flavor to all your rides. Anti-slip silicone exterior, 21 oz capacity, and 100% recyclable stainless steel. BPA-free and built to last. Silicone anti-slip exterior on colored bottles Double-wall vacuum insulated (12hrs+ cold) Patented high-flow sport nozzle LFGB-compliant food-grade silicone components BPA/BPS/BPF and phthalates free components 100% lead free 100% recyclable stainless steel