Lightweight, insulated, air permeable softshell. Balances air permeability and thermal protection for summer alpine, hiking, and rock climbing. Features: FL = fast and light: Minimalist, high performance and light weight, for rapid travel in variable conditions Proton: Air permeable mid layer insulation with abrasion and weather resistant outer surface Breathable Fortius™ Air 20 fabric: Allows moisture vapour to escape, helping regulate temperature and elevating comfort inside garment Light wind resistance Air permeable Octa® Loft insulation: Breathable Maintains a comfortable micro climate Hood: Adjustable Low profile and fitted - Uninsulated to fit well under a helmet Provides wind protection Two zippered chest pockets Two zippered hand warmer pockets Hem adjustment toggles Trim fit Hip Length Centre back length: 77 cm / 30.4 in Weight: 323 g / 11.4 oz Arc'teryx Men's Proton FL Hoody A