The Arcteryx Alpha SV Jacket is the ultimate GORE-TEX PRO Most Rugged mountain shell providing the toughest of barriers against the severest weather. It has ultra tough 100 Denier face fabric for total dependability and excellent durability. The Alpha SV Jacket has a regular cut with e3D, ergonomic 3-Dimensional patterning, designed to enhance a greater freedom of movement. Most Rugged 3L GORE-TEX Pro 2.0 is the toughest and most durable waterproof fabric in the Gore-Tex range. Manufactured with an extra polyurethane element in the membrane to its lifespan and make it more abrasion resistant. It has been constructed for intense activity that may include frequent stops providing the high levels of breathability and abrasion resistance required by the climber, mountaineer or ski tourer. GORE-TEX PRo Most Rugged is paired with a 100 denier face fabric made from 100% recycled materials. The Alpha SV Jacket is secured with a tough Watertight Vislon zip, these heavier zips are easier to use especially with gloves on. The helmet compatible StormHood can be drawn in with just one hand, battening the hatches down but if the weather is poor and you're working hard, ventilation can be provided through the underarm pit zips. On either side of the hem is a HemLock insert that holds the jacket comfortably under a climbing harness and prevents it from riding up. Arcteryx Alpha SV Jacket Features Most Rugged 3L GORE-TEX Pro 2.0 100D 100% Recycled Nylon face fabric Helmet compatible StormHood Watertight Vislon front zip 2 WaterTight zipped volume pleated chest pockets 1 WaterTight zipped left arm pocket 1 internal zipped security pocket and 1 internal dump pocket WaterTight pit zips Cohesive hem adjusters that also work as HemLock Fit:Regular Weight:485g Arcteryx Alpha SV Jacket