The Women's Patagonia Lightweight A/C Buttondown Shirt is light, airy organic cotton and industrial hemp crepe fabric that helps keep you cool in hot weather. A relaxed fit and a center-front button closure make it easy to wear over a bikini or under overalls, with two traditional drop-in chest pockets for essentials or classic double-button cuffs designed to be rolled up. This cross-grain back yoke with center-back gathers for movement, and the shirttail hem is intended to cover the bum and finish at the lower hip, depending on torso length.