I ordered a medium large in aqua. It fits like a smaller medium. Im usually a size medium or size eight and weigh 140 pounds. The sweater is not really oversized but the sleeves are long and I like that.  It is not auqa! It is definitely turquoise. Dont know if you can pick that up in the picture.  Mine is heavy though. Some people mentioned theirs was lightweight so at least mine wasn't lightweight.