Description of CamelBak Helena 100oz. Hydration Pack For the outdoor enthusiast looking for a pack designed with her in mind. The new CamelBak Helena is the most popular backpack size and offers enough cargo and hydration for multi-hour outdoor adventures. Features: OMEGA HydroTanium Reservoir with lifetime warranty Insulation to keep liquid cool for hours Full zip access to reservoir makes loading easy Front pocket with new pull out organizer design Quick access overflow storage with dual compression straps Women's-specific Dynamic Suspension Harness with Air Mesh and Velvetex for a comfortable fit 2" waist belt ergonomically designed to fit women