I love this robe. Excellent quality and so soft and comfortable. I washed it and didn't notice any shrinkage, it just got softer. I am 5'5" and have plenty of room in the s/m. I would say someone up to 5"8" would have enough length to wear a s/m. I cuffed the sleeves once to make it the right length for my arms.
EXACTLY what I was looking for!!!! LOVELY fabric: light weight, soft, yet gives full coverage... Well made: feels anything but cheap (and I'm a fussy consumer; a cotton snob as well... nothing polyester touches this body!) CLASSIC style: looks good and fits well, not skimpy (bought my appropriate size and the robe goes nicely and comfortably all the way around me with nothing hanging out)... LOVE this robe so much that I'm thinking of buying a second one as a back up... YOU can buy confidently and not be disappointed!
If you are ordering this robe, be aware that the material is see-through thin and the sizing is HUGE. I normally take the size I order and two of me would fit into this robe. If you want a super-light no-modesty robe, then this is for you (but be sure to order a size down).