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. This wind resistant, breathable hoody is perfect for light and fast alpine specialists looking for enhanced mobility. A tough, wind resistant outer face sheds moisture and a light inner fleece adds warmth while wicking away moisture.The warmest Gamma softshell hoody in the Arc'teryx Essentials collection. 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 Athletic fit for a slimmer more flattering profile Laminated brim Adjustable hood drawcords Helmet compatible StormHood(TM) Soft brushed-lined collar Full front zip with wind flap Corded zipper-pulls reduce noise and are easy to grab Micro corded zipper pulls Stretch-woven cuffs Drop back hem Adjustable hem drawcord Laminated hem Laminated sleeve pocket with laminated zip Chest pocket with hidden zip Two hand pockets with zippers Athletic Fit, Hip Length Weight: 580 g / 1lb 4.5 oz Activity: Backcountry Skiing / Ice Climbing / Alpine Climbing / Hiking / Trekking Materials: Fortius 2.0(TM)-53% polyester, 27% nylon, 20% elastane, 160 g/m . A membrane-free, air permeable, four-way stretch woven nylon/spandex fabric laminated to a low profile, mid-weight four-way stretch fleece.