The camelbak spark 10lr womens hydration pack has a women specific ultra light design with a low centre of gravity the antidotetrade 2l lumbar reservoir ensures you stay full hydrated throughout the day in and out the saddle along with camelbak39s vertical ventilation lvtrade back panel allowing your back to breathe and be comfortable on the more hot days the camelbak spark 10lr womens hydration pack also features a fleece lined media pocket to protect your smartphone ipod or other de