I'm 5.5 and 116 lbs. I got this sweater in size small. Great fit. Not too small, not too big. Length is just above my crotch. Very soft/comfortable and nicely made. I will order more colors. I live in the Palm Springs area where it isn't often frigid but there are enough times when I want a tad more than short sleeves, this is perfect. If you live somewhere really cold this would be great for layering. Highly recommend.