Hiking Backpack 80L/100L, High-Capacity Expedition Climbing Pack | VertexThe Vertex series is a multi functional line of expedition backpacks featuring a rigid U shaped frame, available in 80L and 100L volumes. Specifically designed for mountaineering, high altitude climbing, extreme expeditions, and mountain trekking, these packs are built to handle the most demanding environments. The robust design ensures that every piece of gear is supported and accessible during long term mountain activities. The durability of the