Big enough for sunup to sundown adventures, the generously sized Gregory Zulu 40 Litre Backpack is light and agile thanks to the FreeFloat dynamic suspension. Paired with the adjustable torso length, the comfort of the FreeFloat suspension is unmatched. Ideal for full-day adventures or summer overnights, with an adjustable, dynamic FreeFloat suspension. Features and Specifications FreeFloat ventilated suspension featuring the 3D comfort cradle hipbelt with dynamic flex panels that move with the natural movements of your body. 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). Top zippered pocket with reflective attachment points, key clip, and internal zippered security pocket. Dual side stretch mesh pockets with pass-through for over or under compression. Front stretch mesh pocket with secure buckle closure. 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. Frame Type: Internal with Perimeter Wire Suspension Technology: Freefloat Compartment Access: Top/U-Zip Closure Type: Drawcord/Zipper Number of External Pockets: 6 Hydration Compatible: Yes Raincover Included: Yes Hipbelt Included: Yes Hipbelt Pockets: Yes Trekking Pole Attachments: Yes Adjustable Torso: Yes Fits Torso: 38.1 - 48.3 cm Fits Hips/Waist: 68.5 - 116.8 cm Volume: 38 Litres Weight: 1.32 kg Maxiumum Carry Weight: 16 kg Packed Dimensions: 61cm x 31.1 cm x 27.9cm Materials: Pack Body: 210D Honeycomb Cryptorip HD Nylon / 210D High Tenacity Nylon  Back Bottom: 420D High Density Nylon / 135D High Density Polyester. Lining: 135D High Density Embossed Polyester Suspension: Dual Density LifeSpan EVA Foam Frame Materials: 4mm Alloy Steel and Fibreglass anti-barreling stay and HDPE Gregory Zulu 40 Litre Men's Daypack