Wear Marmot's 100-weight Reactor Jacket as a stand-alone layer or mid layer under a shell for breathable, quick-drying warmth that allows freedom of movement and won't weigh you down. Lightweight Polartec Classic 100 microfleece fabric for warmth without weight. Weather resistant, highly breathable, quick drying, pill-resistant, and durable. Flatlock construction for a smooth fit and nonchafing comfort. Zippered handwarmer pockets. Bonded zippered sleeve pocket. Wind flap behind front zipper with soft chin guard. Elastic drawcord hem. Angel-Wing Movement allows full range of motion in arms so jacket doesnt ride up. Center-back length: 27.75 in.. Regular fit.