The vintage Military Wool 5 Button Sweater is a great choice for the outdoorsman looking for warmth or for casual wear. The five oversized button closure is both effective and handsome. The ribbed waist and sleeve cuffs add to the comfort level and heat retention. It looks sharp, and yes, of course, its warm. Incredible quality Genuine U.S. Military Issue. These are the authentic fatigue sweater first worn by Troops in WWII. 100% wool, rib knit cuffs, and waist. Recommended dry clean or hand launder. Please be aware that these sweaters do run small. For this reason, we recommend sizing up by at least one size.