Winter Belays Are Unforgiving. The Alpha Parka – Our Warmest Down-insulated Belay Parka – Sheds The Cold And Wind So You Can Focus On Your Task. Rds-certified 850-fill Down’s Outstanding Warmth Is Complemented With Mapped Synthetic Insulation For Added Breathability In Moisture-prone Areas. Exceptionally Breathable 2l Gore-tex Infinium™ With Ultralight, Ultra-durable Hadron™ Face Fabric Blocks Wind And Resists Water While Adding Warmth Equivalent To 100g Of Down. A Proprietary Fabric We Created To Redefine The Standard For Superlight Alpine Durability, Hadron™ Is Engineered With A Liquid Crystal Polymer Ripstop Grid To Deliver Abrasion Resistance Rivaling Fabrics Twice Its Weight. A Stormhood™ Protects Without Impacting Lines-of-sight, And The Articulated Gender-specific Design Fits Comfortably Over Winter Climbing Gear.