I am 6'1 and generally wear small or occasionally mediums.  These in a small are perfect.  I like a mostly snug fit but not too tight.  Consequently I don't need to use the drawstrings to hold them up.  Speaking of which, the drawstrings frayed some after the first wash but I'm not bothered by it.  I bought these mostly for lounging around the house and they are warm and thick enough for cooler weather without feeling bulky.  Pockets are sufficiently deep.  They simply feel really good against the skin -- very soft material.  I like them better than the Southpole Basic Marled Fleece jogger which I also got although those are OK too.