Hiking, trekking, or everyday, the Zeta AR Jacket is one of the most versatile jackets in the Arc'teryx arsenal. It's made with lightweight GORE-TEX(R) fabric and features a flattering fit and GORE(R) C-KNIT(TM) backer technology, making the fabric quiet, comfortable, and breathable. Completely waterproof and windproof, the Zeta AR Jacket is everything that a good shell should be.