Gregory Pack Zulu 35 l is equipped for enduring long days of hiking, with the dynamic FreeFloat ventilated suspension making the final push to the summit easier.   Features: The torso adjusts approximately 9 cm for a custom fit without sacrificing support. Gregory’s patented FreeFloat dynamic waist belt connects to the frame with a panel designed to move and flex with your body. The 3D waist belt design conforms to your body shape, providing consistent padding and necessary support for heavy loads. Full-length tensioned mesh creates space between the pack and your back, allowing heat to escape and air to flow freely for cooling. Engineered with tension and compression architectural principles, the perimeter frame offers stable yet flexible support for comfortable load carry. Oversized waist belt pockets offer easy, secure access to essentials. Lifespan foam shoulder straps ensure long-lasting comfort, perforated for optimized airflow on the trail. Integrated waterproof cover in a dedicated zippered pocket for optimal organization. U-shaped main zipper opening for easy access to the main compartment. Hydration sleeve with SpeedClip hydration hanger compatible with Gregory 3D Hydro reservoir (reservoir not included). Top zippered pocket with reflective attachment points, key clip, and lower internal secure zippered pocket. Dual stretch mesh side pockets with over or under compression pass-through. Front stretch mesh pocket with durable front panel and secure buckle closure. Adjustable attachment loop and top shock-lock for trekking poles or ice axe. Custom zipper pulls with comfort grip. Materials: Body: 40% Recycled 400D Polyester Ripstop with C0 DWR (PFAS-free). Base: 420D Nylon with C0 DWR (PFAS-free). Straps/Belt/Lumbar Padding: Lifespan EVA Foam / Multi-Density Foam. Support Structure: Alloy Steel Frame. Lining: 40% Post-consumer Recycled 135d Polyester with C0 DWR (PFAS-free). Pack Hardware: Bluesign approved buckles. Gregory Pack Zulu 35 l trekking backpack