As Black Diamond's largest ice, rock and snow pack, the new Predator has plenty of volume for big days or overnight stays. Strong 420d SilNylon can take abuse from scrub oak-guarded approaches for season-after-season durability. The Predator securely holds two ice axes, a pair of crampons, a helmet and skis on its exterior and offers quick and easy access when needed, making it equally at home on Mt. Rundle or the Haute Route. Features: Y-Rod Our unique Y-Rod aluminum stay, with no welded points, provides support where needed, yet enough flexibility to give total freedom of movement. Cut and bent from aluminum rod stock, the Y-Rod offers a better strength-to-weight ratio than more common aluminum pack stays. SilNylon Our SilNylon is silicone and PU-coated nylon—a unique material with a high strength-to-weight ratio, water-shedding capability and the ability to self-heal small punctures. SilNylon is used throughout our pack line for its light weight and excellent strength. Ergo-molded Suspension Ergo-molded foam back panels, waistbelts and shoulder straps are anatomically shaped to eliminate pressure points while transferring the load evenly over areas of contact. Our ergo-molded suspensions allow for a custom-fit feel with excellent support. Die Cut Hypalon Two-layer Hypalon accessory loops are incredibly durable and streamlined as opposed to the clutter of traditional webbing accessory loops. Grippy and extremely tough, Hypalon is ideal for attaching ice and snow gear to your pack. Specs: Capacity: 50 Liters (2750 cu in) Weight: 2 lb 15 oz Fits: S/M (16-19 in), L/XL (18-21 in)