From CamelBak comes the breakthrough concept of wearable hydration with the RaceBak, designed for cyclists, endurance athletes and triathletes. RaceBak fits comfortably under a jersey and has an aerodynamic and stable compartment for a 72 oz/2.1 L reservoir (1-2 hrs of hydration). Available in white/graphite color scheme, in both men’s and women’s styles. Not sold directly through CamelBack, but you can buy it at various online retailers for about $100, though you can probably find it for less.