Gamma Series: Highly breathable textiles with stretch and differing degrees of thermal efficiency that can be worn as water resistant outer layers. High degree of abrasion resistance. MX: Mixed Weather. Designed for mixed usage in changing weather conditions and diverse activities by providing high durability, breathability and mobility. 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.The Arc'teryx Gamma MX Jacket is engineered for elemental protection and provides light warmth with a mid weight 4 way stretch fleece. The Gamma MX Jacket for men has articulated patterning for increased freedom of movement and an athletic fit that makes it ideal for under or over layering. Features: Moisture resistant outer face fabric Snow shedding Breathable Lightly insulated Durable Wind resistant DWR finish Durable Water Repellent helps repel water from fabric surface Anatomical shaping for fit and comfort Articulated elbows No lift gusseted underarms Soft brushed lined collar Full front zip with wind flap Corded zipper pulls reduce noise and are easy to grab Zipper garages to protect zipper closure from snow and rain Stretch woven cuffs Hem Configuration Drop back hem Adjustable hem drawcord Laminated hem Laminated sleeve pocket with laminated zip Two hand pockets with zippers Two chest pockets with hidden zippers Athletic Fit, Hip Length Weight: 575 g 1 lb 4.3 oz Activity: Backcountry Skiing Ice Climbing Alpine Climbing Hiking Trekking Materials: Fortius 2.0TM 53% polyester, 27% nylon, 20% elastane, 160 gm . A membrane free, air permeable, four way stretch woven nylonspandex fabric laminated to a low profile, mid weight four way stretch fleece.