Gregory Pace 5 Hydration Backpack - Women's - 275-305cu in - $128.95

Optimized for two to four hour runs, the Gregory Pace 5 Hydration Pack holds five liters of water, fuel, and gear close to your body for maximum stability. Gregory's exclusive Hydrapak reservoir has a baffled design that reduces the annoying sloshing around as you run, and there are plenty of accessory pockets to ensure that you can carry everything you need and stay organized. - $128.95