Did you know that this pack can filter the water that you pull from a stream, river, lake or pond? Fabric: 100% Ballistic Rip Stop. Bladder: 70 oz with quick-release valves for drinking tube and pressurization tube for easy fill and bladder removal. Slide top for easy fill, cleaning and drying. Heavy duty size 8 coil zippers. Vertical zippers that are I-POD ready. Removable waist strap. Ergonomic fit shoulder straps with terraced overlay for adjustable tube configuration and power bulb configuration. Industrial load disbursement cut and padding. Integrated slider chest strap. Plug and play reservoir tube connector. Compression straps with PVC reinforcement. Industrial nylon gear strip. Reflective zipper pulls. Eco rig back pads with air drive ventilation. Heavy duty nylon pack handle.