CLOSEOUTS. On its own in mild temps or as part of your layering team in freezing conditions, this SmartWool 250 base layer top offers soft, stretchy, moisture-wicking comfort to keep you warm and dry. The contoured hood offers an extra level of protection, and the locking half zip makes for quick and easy venting. Available Colors: BLACK/LIGHT GREY, DEEP NAVY, BORDEAUX. Sizes: XS, S, M, L, XL.