I ordered this jersey in a medium; I am 5'7", 130lbs. I felt it was generally a bit snug, especially for a full-length zipper piece. I was hoping to be able to wear a layer under it for spring riding. It would work only as a single layer, and even then I think I would need more length in the back and room in the shoulder area when actually bent over into riding position. The fabric also seemed thin to me, especially for the price. I returned it and will keep looking. I have a lot of Icebreaker clothes; I generally really like their products, but not this one.