Description
The Arc'teryx PRO Alpha PRO 50 Backpack is a technical alpine pack designed for mountain professionals operating in remote and rugged terrain. Built for technical alpine travel and mountain rescue, it combines stable load carriage with quick equipment access and weather-resistant construction to keep critical gear protected and accessible in challenging mountain environments.

A full-length side zipper provides access to essential equipment even when the pack is fully loaded, while the supportive harness and hip-belt suspension system helps balance loads over technical terrain and long approaches. Fully seam-sealed construction helps keep equipment dry in snow, sleet, and prolonged wet conditions, and the expandable roll-top provides additional capacity for ropes, layers, and emergency equipment.

Features
• Flat, square-cut base improves load stability and allows the pack to stand upright when staged on snow or rocks
• Supportive harness and hip-belt suspension provides balanced load carriage across technical terrain and long approaches
• Fully seam-sealed construction and laminated frame help resist moisture ingress in prolonged wet and snowy conditions
• Durable ripstop construction withstands abrasion, sharp equipment, and repeated use in harsh alpine environments
• Full-length side zipper provides quick equipment access even when fully loaded
• Expandable roll-top collar provides additional space for ropes, layers, and emergency equipment
• Flap overlay protects the top-entry cinch point from snow and moisture
• Dedicated ice-tool carry system provides secure transport and convenient access in steep terrain
• Compatible with the optional PRO Backpack Lid

Best For
• Mountain rescue
• Search and rescue operations
• Technical alpine travel
• Mountaineering
• Remote and rugged terrain
• Wet and snowy mountain environments
• Carrying technical climbing and rescue equipment
• Long approaches and extended mountain operations

Specifications
• Capacity: 50 L
• Expandable Capacity: Additional 12 L
• Weight: 1220 g / 43 oz (Size Regular)
• Available Sizes: SRT, REG
• Material: 315d Nylon 6,6 with 4 mm 400d Untwisted Vectran Grid
• Face Treatment: PU Double Coat
• Fabric Weight: 240 gsm
• Construction: Fully Seam-Sealed
• Frame: Laminated
• Ice Tool Capacity: Up to 4 Technical Tools
• Chemical Treatment: Free From Intentionally Added PFAS
• Lid Compatibility: PRO Backpack Lid (Sold Separately)