The CamelBak Charm Hydration Pack is designed for women who'd rather be biking or running than hanging out at home. The Charm has a unique women's specific design. Its harness curves to fit women's bodies without chafing caused by ill-placed straps. Soft Velvetex fabric on the harness interior also increases comfort. An external zip pocket lets you stash energy gel or your keys, and a bungee lets you take a jacket along. With a 50oz (1.5L) reservoir, the CamelBak Charm Hydration Pack is perfect for a morning run or afternoon bike ride.