Big enough for an overnight, light enough for a day hike, the Zulu 45 uses a dynamic FreeFloat suspension, providing comfort in all environments. With an athletic look, full adjustability, and refined materials, we straddled the line between a daypack and an overnighter. WEARABILITY Adjustable torso provides 3.5" of adjustment, allowing for a custom fit without compromising support.Gregory's patented FreeFloat dynamic hipbelt links the hipbelt to the frame with a panel designed to move and flex with your body.3D hipbelt design conforms to the shape of your body, seamlessly providing the padding and support needed to carry heavy loads.Full-length tensioned mesh creates space between your back and the pack to allow for heat to escape and air to flow freely to cool you down.Designed around the architectural principles of tension and compression, the perimeter frame provides stable, yet flexible support to comfortably carry the load on your back.Constructed from Lifespan foam to provide a generations worth of comfort, the shoulder harnesses are perforated to maximize airflow and comfort on the trail. POCKETS Extra large hipbelt pockets provide secure, easy to access to the essentials you want at your beck and call.Top zippered pocket with reflective attachment points, key clip, and underside zippered security pocket.Dual side stretch mesh pockets with pass-through for over or under compression.Front stretch mesh pocket with durable fabric front panel and secure buckle closure. ACCESS Main U-Zip opening for open access to the main compartment.Custom ComfortGrip molded zipper pulls.Quick-pull drawcord closure and top webbing compression. HELPFUL ATTACHMENTS Hydration sleeve with SpeedClip hydration hanger, compatible with Gregory's 3D Hydro reservoirs (reservoir not included).Adjustable attachment loop and upper shock lock for trekking poles or an ice axe. Ideal Fit For: Men Activity: Hiking / Backpacking Product Dimensions: 25in H x 12.8in L x 12.5in W Weight: 3.45lbs Volume: 43L Max Carry Weight: 40 lbs Main Body Access: Top/U-Zip Compartment Access Fits Torso: 15in-19in Fits Hips/Waist: 25in-48in Internal Frame: Yes Frame Type: Perimeter Wire Number of External Pockets: 5 Closure Type: Drawcord/Zipper Closure Hydration Compatible: Yes Hip Belt Included: Yes Hip Belt Pockets: Yes Trekking Pole Attachments: Yes Frame Materials: Alloy Steel Frame External Material: 50% Polyester / 50% Nylon Pack Body: 40% Recycled 400D Polyester Ripstop with C0 DWR: designed without PFAS Pack Bottom: 420D Nylon with C0 DWR: designed without PFAS Lining: 40% Post-consumer Recycled 135D Polyester with C0 DWR: designed without PFAS Suspension: Lifespan EVA Foam / Multi-Density Foam