Use Case: Use Case: This extremely lightweight, technical, water-resistant, 30 liters by volume alpine touring backpack for shorter back lengths features an innovative Hybrid Back system that meets all the high demands of alpine touring, skiing, and mountaineering. The Hybrid back system deploys three soft Swisswool pads at stressed contact areas that ensure comfort as well as reduce moisture S-Backpack Series: Specifically designed for shorter back lengths, the shorter S back system is ideal for both men and women with a back length range from 36-44 cm, featuring thinner/shorter shoulder straps with a pronounced s-shape, conical shaped hip fins and adapted to the female anatomy for all-day comfort Features: Swisswool Tec-Knit Back system, compression strap, chest strap with signal whistle, removable back reinforcement, hip pocket, and lid compartment including a key holder. Front material: Polyamide 420 D RIPSTOP: 50% recycled Body Material: Polyamide 420 D: 100% recycled; PFC-free Gear Loops/Attachments: A-Skifix, D-Skifix (diagonal), equipped with gear, ice axe and hiking pole loops, helmet net, and rope attachments Easy Access: Circumferential zipper provides rapid access to the entire contents of the main compartment through the convenient front access A lightweight, technical, highly functional, high alpine touring backpack for alpinists with an abundance of features and an innovative back system. It can be easily fitted with the Clasp Spine Protector for increased protection (sold separately).