Features Fully Adjustable Torso Suspension 2 Fluted, Rigid Internal Aluminum Frame Stays Padded Hip Support Channeled, Air-Cooled Back Pad Foldout Bow And Gun Carrying Boot Foldout Rain CoverH20 Compatible (3-Liter) 21 Total Compartments And Pockets 3 Specialized Zip Pockets Expandable, Breathable Meat Compartment 5 Horizontal Compression Straps To Secure Load 4 Vertical Compression Straps To Secure Load Be prepared for everything. The Tenzing 4000 pack is designed to equip you to take on anything you may encounter. With a series of expanding pockets and compartments arranged in a compact vertical design, you can load up all the gear required for your hunt and never miss an opportunity to take down a "shooter." This is simply the most versatile pack available. With a couple of quick adjustments, the TZ 4000 can be configured into three primary sizes, giving you all the space your hunt may need. Packed-in, it provides a generous 2,500 cubic inches. If your hunt requires more space, open the expanding side compartments for an additional 300 cubic inches. And when you haul out that monster buck, open up the central main compartment for another whopping 1,400 cubic inches.