Here's what other sites are saying:
The CamelBak RaceBak vest is 1 part hydration reservoir and 1 part performance apparel-perfect for women's endurance sports. Wear it underneath your jersey.
When you are on your bike, the two of you meld into an aerodynamic machine that's designed to devour miles and cut through the air. The CamelBak Women's Racebak Hydration Jersey is a thermo-regulating base layer that features an integrated 70-ounce water bladder so that your speed machine stays hydrated and you can keep going without fiddling with bottles. Breathable, Quickwick fabric increases sweat evaporation to keep you cool on hot daysQuickFit mesh hugs your body and holds your hydration reservoir close so it won't move around on youInsulated hydration pad prevents your body heat from simmering your water, or you can take it out and let that icy water keep your core coolHelmet-friendly design means you won't have to pull your helmet off to refill
CamelBak(R) Got Your Bak(TM) Guarantee: If we built it, we'll Bak it(TM) with our lifetime guarantee. Reservoir Features: Aero helmet-friendly fillport, center baffling and low-profile design, patented Big Bite(TM) Valve, HydroGuard(TM) technology, PureFlow(TM) Tube and easy-to-clean wide-mouth opening. HYDROPOUCH(TM): Innovative, integrated reservoir compartment encapsulates a 70 oz (2 L) reservoir to support and stabilize the water weight on back. QUICKWICK(TM): Lightweight and breathable, thermo-regulating fabric delivers maximum moisture management and dries quickly for cool and comfortable performance. QUICKFIT(TM): Plush compression fabric self-adjusts while conforming to the body like a second skin. Additional Features: Full length zipper, insulated pad for added stability
- Rocky Mountain Trail
The Camelbak Women's RaceBak 70 oz makes hydration redefined and reinvented part of your apparel for cycling, running and other endurance events. Its thermo regulating base layer stabilizes 2+ hours of water in an aerodynamic, hands-free position on your back. Its vest design offers maximum mobility and comfort under any jersey with a pouch that holds a CamelBak 70 oz. reservoir firmly on your back, while remaining chafe-Free with flat seam stitching.
- Altrec Outdoors