The Beta AR Jacket from Arc'teryx is a lightweight, durable and versatile men's waterproof jacket, featuring GORE-TEX Pro waterproof/breathable performance; ideal for all round mountain activities. Well streamlined to accommodate layers, the Beta AR offers long lasting, fully waterproof storm protection; with a helmet compatible Drop Hood with Cohaesive® cord locks, reinforced shoulders and elbows and a bomber construction to survive serious alpine abuse. Beta AR Waterproof Jacket - Men's