Arc'teryx Alpha FL 45 Backpack N400r-AC2 Nylon 6 Ripstop Made in USA or Imported ALPHA FL 45 BACKPACK - The Arcteryx attention to performance details, focus on delivering maximum functionality with minimalist design, and unrivaled commitment to craftsmanship combine in a fast, light, hardwearing pack for climbers and ski alpinists. ADVANCED COMPOSITE CONSTRUCTION - Laminated, highly waterproof and light weight. Taped seams, permits custom attachments. ALPHA - Lightweight, minimalist climbing and alpinism products that protect from alpine environments. ALPINISM & CLIMBING - Climbing equipment designed for efficient movement and protection in alpine environments MULTI-DAY PACKS - Optimized for load stability, energy efficient carry and function with an emphasis on durability.