I\'m 5\'11 and 155 pounds I got a large because I like my sweaters a little bigger and it fits great. The sleeves are long enough on me and it\'s big enough to wear something underneath it without it feeling too tight. It\'s super warm and I like that it has a zipper as well as buttons to keep all the cold air out. I can wear this in a fall too just like a jacket! I love it!