The Patagonia Men's Piolet GORE-TEX® Jacket protects, moves and breathes with a supple 2-layer polyester waterproof/breathable and windproof GORE-TEX® fabric that has a DWR (durable water repellent) finish. The hanging liner is comprised of a brushed and wicking mesh in the body, with smooth-layering taffeta in the sleeves. The drop-collar design on the helmet-compatible, 2-way adjustable hood provides exceptional coverage and visibility. Finer details include minimal welt exterior and interior storm flaps on the center-front zipper; extremely low-bulk, watertight, coated pit zips; and three external pockets (the jacket also has an internal zippered security pocket).