Double-wall construction keeps water cold twice as long as Regular sport bottles. Large 25 oz (750ml) water capacity. Innovative, self-sealing Jet Valve eliminates splatters and spills. Lightweight, easy-squeeze bottle delivers the right flow to quench your thirst. Removable nossle for easy cleaning. 100% Free of BPA and BPS. TruTaste polypropylene with HydroGuard lets you taste your water, not your bottle. Positive lockout for leakproof transport. Wide-mouth opening is easy to fill with ice and water and a breeze to clean. Also keeps warm beverages warm during cool weather rides.