“I am 165cm 67kg and bought size S. Lengthwise the XS is probably better but i do have large thighs from crossfit so needed the S to fit but it is a little longer than needed and the excess material does collect behind the knees. Not uncomfortable but noticeable. I like the grippers on the thigh and it does stay put but the vertical seam on the gripper is pretty thick and does dig into my skin and leaves a pretty big imprint. Only an issue when doing longer rides. Overall I still use them regularly, just need to put up with those 2 niggles but I would have rated it 5 stars if the vertical seam was not that thick.”