I purchased these as a Valentine's Day gift for my husband. He is 6 ft., about 200 lbs and I got him the XL which was perfect. He loves them. They are very lightweight and soft. He is always hot, but with a 17 year old daughter, he can't run around in his underwear anymore, and he gets warm in sweatpants and regular pajama pants. Plus he won't wear anything itchy. These are awesome.  I have the CK Essentials Woman's robe, which is made of the same material, and I could just LIVE in it. I can't imagine anyone not liking these.