Built for big mountain realities, the winter 2020/2021 men's Arc'teryx Rush Jacket delivers waterproof, windproof protection with comfort and durability. Hardwearing three-layer GORE-TEX Pro sheds snow and wind, but is breathable enough for comfort on ascents. A helmet-compatible StormHood provides coverage with minimal impact on vision, and articulated patterning elevates ergonomic freedom on uptracks and descents. WaterTight pit zips aid ventilation, pockets are secure and accessible, and a powder skirt seals out snow when conditions are running deep. Waterproof, windproof, and breathable GORE-TEX offers fully protective environmental shelter Designed with shredding in mind for efficient protection, layering, and movement Winter 2020/2021 model Equipped With GORE-TEX GORE-TEX is an extremely thin membrane that鈥檚 durably waterproof, windproof, and breathable. It has over 9 billion pores per square inch that are each 20,000 times smaller than a water drop, but 700 times larger than water vapor. This means that rain won鈥檛 get through the membrane, but that perspiration vapor can escape. Different iterations of this basic membrane principle are used in a variety of products throughout the outdoor industry. Durable Water Repellent (DWR) DWR is a fabric treatment that improves the water-repellency of the outer layer of the material, while maintaining its breathability.