Camelbak Helena Womens Hydration Pack - Designed for a woman's frame by using a shorter torso length, an S-curved harness, and by moving the harness hardware to the base of the pack to reduce potential friction points. A special soft-touch fabric lining has also been added to the harness for additional comfort next to bare skin. With a hydration capacity of 100 oz. and the ability to carry 1,281 cubic inches of clothing and gear, you'll be prepared for a full day on the trail.