I ordered a ton of Icebreaker stuff for an upcoming European backpacking trip...and I am in love. I think this sweater is probably my favorite. I originally ordered it too big (an XL), since someone said it ran small in a review. I am 5'4", around 170 (build like a little brick, very straight through the rib cage and waist) and a 38B and the medium fits BEAUTIFULLY. I've tried it on with jeans, travel pants, capris, my travel dresses, my dressier travel dresses, tanks and skirt combos...I am impressed. It makes everything look like a real outfit and not just a random collection of travel clothes. Open or closed, it looks perfect. And it is a nice layering weight too. Will pack down small. Not itchy. Like the color. Love, love, loooooove.