I am 5'8" and weight 150 lbs. I ordered this in XL which is the size top/sweater  that I usually wear. It fits fine and, unlike several other reviews that I read, the sleeves of my sweater are not tight. I can wear a top under it that has fitted sleeves without the sleeves of the sweater becoming tight. There is probably a variation from garment to garment regarding sleeve size (although there shouldn't be). The colors are slightly more vibrant than the item photo depicts, but still slightly muted. My sweater did arrive with a snag in the fabric on the upper back area but it is not noticeable so not worth returning. It was covered in loose threads so I put it in the dryer with a clean damp towel  and a dryer sheet for about 15 mins to remove them. I would buy this again.