Built with rugged 420D CORDURA® and lightweight 210D nylon ripstop with a polyurethane coating, the Flyweight Pack Vest offers incredible durability without weight or bulk. That pack portion incorporates an easy-access roll-top design that compresses or expands to accommodate various-sized gear loads. Low profile shoulder straps are fully adjustable and fit close to the body in order to evenly distribute weight on the trail. The shoulder harness also features a 5.11® HEXGRID® panel for additional Flyweight accessories. For hydration, a 2-liter HydraPak® reservoir is included.