We had to rebuy these in a bigger size because my son outgrew the first pair and loved them so much he wanted the same exact ones again. That's pretty unusual for school uniform items. He is a skinny little boy with no butt or hips, and the slim fit are perfect and stay up even if he doesn't want to wear a belt. I tried to preemptively buy the next size up  and they are out of stock. If they get them back in stock I'll buy more for sure.