The CamelBak Podium Big Chill Insulated Water Bottle uses double-walled construction to keep water cold long after you start pedaling. 100% free of BPA, BPS anf BPF. 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.