Useful for difficult climbs: Even experienced mountain climbers are impressed by the Trea Spine 50 and its Active Spine Technology. The integrated height adjustment provides significant benefits when the backpack is worn. Shoulders and hips move much more freely than with backpacks without Active Spine Technology. This results in a more natural gait. To increase your level of comfort, the backpack&';s carrying system adapts to the female anatomy. Even heavy loads can be managed well using the Trea Spine. The large front opening provides easy access to your equipment on the go. FEATURES Height 64 cm Actual volume 50 Width 31 cm Back length (size system) 43.5/46/48.5 cm Length 32 cm Rain cover No MAMMUT CONNECT inside Carrying system tailored to the female anatomy Suspension system with patented Active Spine Technology to support a natural gait Height of the suspension system can be adjusted with a simple movement High-density, 2-layer EVA back padding; hip belt and shoulder straps with stretch fabric cover Huge front zipper access to main compartment Large internal pocket in the front opening Height adjustable flap with internal and external pocket Internal zipper compartment for valuables Reinforced side ski attachment Gear loop on hip belt Zipper pocket on hip belt 2 strong ice axe attachments Trekking pole carrier Rope fixing strap under the flap Lateral compression straps, can also be tensioned at front to carry gear Daisy chain loop Hydration system-compatible MATERIAL & TECHNOLOGY