Double-walled construction:   keeps water cold twice as long Optimized cage fit:   Engineered to securely fit in a variety of bottle cages Easy squeeze:   get more fluid with less effort High flow, self-sealing cap:   maximizes flow rate while eliminating splatters and spills 100% free of BPA, BPS and BPF:   ride clean, drink clean Specs Capacity:   .62L / 21oz Cap Material:   The Jet Valve™ is made from medical grade, self-sealing silicone Dimensions:   7.3 x 7.3 x 23.8 cm / 2.9 x 2.9 x 9.4 in