90% nylon / 10% Spandex. U-4 fabric jacket (U-Power 4 way stretch) very comfortable, resistant, soft on the skin, water repellent, breathable and that dries quickly. Equipped with two front pockets and a cell phone pocket on the chest with zip. Two large inside pockets. Adjustable retractable hood. Windproof stretch cuff. Adjustable anti-tangle drawstring inside the pocket. Shaped bottom. Reflex tape on collar in the back. It combines with the Atom pants.