Say "Hello" to your new best friend. The z65 boasts a newly designed, beefed up waistbelt that effectively transfers the load off of your back and onto your hips for maximum comfort on the trail. This backpack features the JetStream LTS Suspension with thicker, more supportive foams and waistbelt, auto-fit harness system, dual hydration ports and sleeve, all access front zip, floating top lid, and side and bottom compression. It also has quick access waisbelt pockets, exterior side pockets, dual axe/tool attachment points, water-resistant welded zippers, 210d HT double box ripstop and broken twill nylon fabrics. Sizes: M (3966 cu. in./ 3 lbs. 14 oz./ 18" - 20"L torso), L (4332 cu. in./ 4 lbs. 3 oz./ 20" - 22"L torso).