The Terra pack has a long, J-shaped zipper on its front panel, allowing for a third access point in addition to the top and lower ones. This backpack is available in two frame sizes. The hip belt for the XS/S size adjusts between 61-76 cm, and the back length adjusts between 32.7-45.5 cm. The hip belt for the M/L size adjusts between 76-91 cm, and the back length adjusts between 38-50 cm. Back length is measured by finding the height of the iliac crest on the hip and measuring along the back to the most prominent cervical vertebra at the base of the neck. - Main material: 210 denier polyamide fabric - Reinforcement panels: 600 denier polyester fabric - Aluminium frame system brings the weight on your hips - Dyno-Lift straps keep the upper part of the pack in check - Optifit carrying system for comfort - Dedicated sleeve for hydration bag - Chest strap with safety whistle on its buckle - Floating flap enables a snug fit, or packing a tent or sleeping bag in between - Back panel wi