Fabric is 1050D nylon with water-repellent PUx2 coating on main body. 420D 118T water-repellent PUx2 coating on inside pocket flaps and pocket bags. Features include: Adjustable, dual density closed-cell foam shoulder straps with Duraflex hardware; Closed-cell foam back padded hydration pocket with two back-to-back zippered pull tabs; Generous web-platform on three sides with additional attachment point; Top grab handle; Features a main compartment 20 inch H x 12.5 inch L x 8 inch D; Three mesh interior organizing pockets; One fabric pocket with zippered pull-cords; One interior stuff-pocket with draw cord; Two large metal grommet drainage holes on bottom of pack; Two exterior, side, flat, zippered pockets; Top exterior book-end pockets with fleece-lined organization; Two compression straps; Top, quick-access fleece-lined sunglass pocket; Exterior admin organizational pocket.