Size small bit fits a bit roomy so could fit size medium too. Our bestselling lightweight vest is made with 650 fill power premium down and features an all-new recycled shell and lining. It's a great choice for all your winter adventures...as well as for our environment. Features StormRepel® DWR treatment offers a moisture-shedding finish Recycled shell & lining material 650 fill power down insulation keeps in heat Secure zip hand pockets for small essentials High-collar traps extra warmth Length, center-back, small, 25" Classic. A universal fit. Not too slim, not too relaxed on body.