Costco currently had a V-neck 100% merino wool sweater for $19.99. The size medium I bought (as a gift)weighs 10.1 oz. Made in Italy, they are very thin and I believe could be worn as an underlayer against the skin. Be careful of the size you buy. I normally take an XXL—it was small on me in this sweater, that is—it fit, but was tight, not loose as XXL's usually are for me.
