I have another Burton snowboarding jacket that is a small, but I ordered a medium in this one, because the size guide suggested I did. I think a small would have fit ( I’m about 5’5”, 140lbs, I usually wear a size S/M in tops and size 2/4 in bottoms) but I like the roominess in the medium coat. Also, the size small in this same coat was almost twice the price, so this is great. It is very warm and I like the material. It feels sturdy and you can tell it would do well against snow or rain. The good is detachable, which I might do if I am wearing a hooded sweatshirt underneath. Great buy. Im glad I invested in this Burton Chestcott coat. In the picture I am also wearing it with one of Burton’s 3-pack beanies. They are also great!