Arc'teryx Men's Gamma Mx Jacket Fortius 2.0 - Face: 85% nylon, 15% elastane. Backer: 94% polyester, 6% elastane Imported Zipper closure Machine Wash MIXED WEATHER - Highly durable, breathable and mobile. Best for mixed usage in changing weather conditions. BREATHABLE MATERIAL - Allows moisture vapour to escape, helping regulate temperature and elevating comfort inside garment. GAMMA MX JACKET - Ideal for dynamic backcountry activities in mixed weather conditions, this mobile, articulated soft shell jacket is engineered to provide elemental protection with high levels of breathability and mobility. GAMMA - Weather resistant mid or outer layers with stretch. Highly breathable and abrasion resistant. ARC'TERYX ESSENTIALS - Versatile high performance designs for diverse activities and conditions. Durable and light.