Combining week long volume with a streamlined profile, the ventilated, adjustable FreeFloat suspension on the Zulu 65 gives you incredible year round versatility. The large, U-Zip opening makes access and organization of your gear a snap.. . . . . Adjustable torso length with open-air ventilated backpanel with moisture wicking mesh.. 3D comfort cradle hipbelt with 3D construction for hotspot free, body-hugging comfort.. Die-cut shoulder harness with sternum strap featuring integrated safety whistle and hydration clip.. Perimeter alloy frame and fiberglass anti-barreling cross-stay for stable load management.. Raincover included with dedicated zippered pocket behind front pocket for added organization.. Sunglass QuickStow system on shoulder harness for quick, secure and scratch-free access to your shades.. Front U-Zip opening for easy access to the main compartment without removing the top pocket.. Hydration sleeve with SpeedClip hydration hangar compatible with Gregory's 3D Hydro reservoir (reservoir not included).. Floating top pocket with zippered compartment and an underside zippered pocket, reflective attachment points, and key clip.. Dual side stretch mesh pockets, with side trail access, with pass-through for over or under compression.. Front stretch mesh pocket with secure buckle closure.. Zippered bottom sleeping bag compartment with removable divider.. Adjustable attachment loop and upper shock lock for trekking poles or an ice axe.. Custom comfort-grip molded zipper pulls and molded webbing keepers for strap management.. External Material: 100% Nylon. Frame Materials: 4mm Alloy Steel & Fiberglass anti-barreling stay & HDPE. Pack Body: 210D Honeycomb Cryptorip HD Nylon / 210D High Tenacity Nylon. Pack Bottom: 630D High Density Nylon / 135D High Density Polyester. Lining: 135D High Density Embossed Polyester. Suspension; Dual-density LifeSpan EVA Foam. . . . . . . SMALL/MEDIUM. . . Fits Torso; 15" - 19" / 38.1 - 48.3cm. Fits Hips/Waist: 27" - 46" / 68.5 - 116.8cm. Weight: 3.68lbs / 1.67kg. Volume: 63L / 3844cu in. Rain Cover Weight 0.21lbs / 95g. Max Carry Weight: 40lbs / 18kg. Packed Dimensions; 28" x 13.25" x 13" / 71.1cm x 33.7cm x 33cm. . . . . MEDIUM/LARGE. . . Fits Torso: 18" - 22" / 45.7 - 55.9cm. Fits Hips/Waist: 29" - 51" / 73.7 - 129.5cm. Weight: 3.71lbs / 1.68kg. Volume: 65L / 3966cu in. Rain Cover Weight: 0.22lbs / 100g. Max Carry Weight: 40lbs / 18kg. Packed Dimensions: 30" x 13.25" x 13" / 76.2cm x 33.7cm x 33cm.