I had ordered the M so it could fit a little bit more baggy since I bought it to workout in but it actually was the perfect fit. Id probably recommend to get a size bigger. Im 51 and little bit of a wider torso and the sweater fit good. Lined up perfectly on the waist and the arm length was perfect, but like I said I was going for a more lose/bigger fitting sweater. Also when I was working out in it my arms looked super hairy after I took it off. Which was not a big deal because it came right off after I showered. It was just a surprise when I took it off. Probably will buy another in a larger size to get the lose/bigger fit I was looking for.