Built for alpinists who move fast, the Alpha FL Jacket delivers hardwearing GORE-TEX Pro performance for a mere 315 grams. Made with a durable N40p-X face fabric, it is carefully constructed to optimize breathability by stacking the exterior and interior pockets. Every gram was carefully considered yet it provides exceptional freedom of movement and room for light layers. Helmet compatible StormHood™. Custom Cohaesive™ hem adjustments serve as HemLocks™ to prevent slippage under a harness.