Watching races or out for a leisurely ride, continuous hydration is must to stay fresh and alert. Camelback Charm Hydration packs are design to fit women comfortably with curved shoulder straps that do not bind. Capacity is 50 oz. with a small zippered pocket for keys and ID storage. Its chassis sits on four points, allowing air to flow through its padded back. Walk around the paddock or venture out on ride with a Charm Hydration Pack.