GoLite Men's Jam Pack Updated for 2010! Now constructed with recycled nylon, a larger front pocket and updated suspension system Our best selling ultralight classic is equipped with a large front pocket, side water bottle pockets, and convenient small storage pockets on the hip belt New Double-Wishbone hip belt transfers weight efficiently to the hips High void mesh on the back panel and shoulder harness moves moisture quickly and promote rapid drying 3233 cu.in. / 53 L 1 lb 15 oz / 879 g