Keeps your mouth clean and your drink cold twice as long Double-walled construction:    keeps water cold twice as long Optimized cage fit:    engineered to securely fit in a variety of bottle cages Easy to clean interface:    all parts can separate for thorough cleaning Nozzle cover:    keeps dirt out and your mouth clean (remove when not in use) Specs Capacity:   .62L / 21oz Cap Material:   The Jet Valve™ is made from medical grade, self-sealing silicone Dimensions:   7.4 x 7.4 x 21.1 cm / 2.9 x 2.9 x 8.3 in