Arc'teryx Alpha FL 20 Backpack climbing backpack

The Alpha FL 20 backpack from Arc'teryx is a technical backpack for mountaineering and climbing designed for those seeking maximum performance with minimal bulk during pushes to the summit or minimalist climbs. Made with the innovative Hadron AC² LCP (liquid crystal polymer) fabric, this model ensures exceptional abrasion and weather resistance while weighing only 635 grams. The structure features a thermoformed back panel and shoulder straps that provide support, structure, and superior carrying comfort even in the most challenging conditions. Despite its compact size, the 24-liter capacity can be further extended thanks to the practical extension flap, while the main compartment is easily accessible even with gloves due to the cord closure system and webbing tabs. External versatility is ensured by six integrated anchor points, a compression system with elastic cord ideal for carrying crampons or a belay parka, two ice axe attachments, and a specific top strap for securing the rope. Safety in mountain environments is enhanced by the integrated RECCO® reflector, which facilitates search operations in case of emergency. The backpack also features an external pocket with a WaterTight™ zipper and key clip, as well as an internal security pocket for valuables. With a length of 57 cm, a width of 27 cm, and a depth of 18 cm, the Alpha FL 20 meets bluesign sustainability criteria and complies with PFAS regulations, confirming itself as an essential tool for elite mountaineering and rock climbing.