Lighten it up.The Hydrobak™ Light carries essentials and a light layer so you can carry on. Durable and ventilated materials make this pack perfect for any adventure. Key Features: Lightweight and durable materials ,Air support™ back panel with body mapping technology ,Ventilated harness ,Secure zippered pocket , Helmet carry,Adjustable sternum strap, Reflectivity,. Specification: Total Capacity: 2.5L, Gear Capacity Only: 1L, Reservoir Only: 1.5L,. Womens FitOur women’s packs utilize body mapping technology, for a tailored fit and excellent cooling. S-curved shoulder harness is contoured to fit a woman’s body for added comfort and stability, Pack shape is thoughtfully designed with a woman’s torso men’s specifications in mind  .