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Trion Spine is an alpine backpack that respects female anatomy. The patented Active Spine Technology supports natural motion. The height of the suspension system is adjustable by simple movement. It features a range of functional features such as a front entry to the main compartment, an adjustable lid, a pocket for valuables, an adjustable waist belt with a pocket, straps for rope fastening, daisy chain, carrier for trekking poles, ice axe or ski and compatibility with hydration system.