Rugged and with twin compartments, the slightly smaller and sleeker Cyclone is an upgraded modular design that allows internal and external storage from the entire BlackHawk Pouch arsenal. It has one large main compartment and 2 smaller outer compartments. Both have BTS webbing and the lower/larger compartment also has Daisy chains (utility loops) for rope, carabiners, 550 cord, etc. Features include: Intercooler ventilation system compresion molded foam intercooler back panel, revitalizes, cools, and enhances pack support and performance. Easy access Reservoir pocket. Tube routing system. Additional pocket for 2nd reservoir and tube routing system. Contoured, padded shoulder harnesses and sternum strap. Anodized metal d-ring, and quick cinch buckles. Made of 1000D NyTaneon. BTS modular attachment webbing inside, outside and on load bearing waist belt. Outer cinch/compression straps. Modular attachment to BlackHawk 3-day accessory pouches. Grip force rubber grab handle. Comes standard with 100 oz. reservoir, insulated tube cover, on-off valve, Stormflow Delta bite valve and tube.