UTG Advanced Expeditionary Pack Dual Pack System with Huge Main Pack and Medium Patrol Pack Quick Release Tabs for Modular Use and Immediate Removal Heavy Duty Ballistic Nylon Material, Mesh Padding for Maximum Comfort, Fully Adjustable, Removable Aluminum Support Frame. Rugged Straps and Buckles on the Pack Allow for Load of Gear, Large Pack Dimension  34 x 24 x 10, Patrol Pack Dimension  17 x 15 x 9 Padded and Adjustable Shoulder Straps, Waist and Hip Belts, Ergonomic Design to Displace the Weight Properly to Hips and Shoulders and Not on the Back