My son's measurements indicate he should get a Medium, and this Medium fits well in the body, he likes clothing that fits closely and it does, but the sleeves are just too long. I now notice the model in the picture has the sleeves down to his palms -- even though they gathered up some of the material on his wrists and foreams to take up some of the length. We have returned it and reordered a Small because he really likes the sweater, so we will have to see if that works. UPDATE: We just received the size Small and it fits great and he loves it. Raising rating to 5 stars.