DS is a fairly skinny 5 yo. He has elasticated waist slim fit M&S school trousers. Ever since he started in reception, he always has a builders bum when he bends over or reaches his arms in the air.
Even though the 4-5 trousers still fitted him in waist and length, we bought the 5-6 ones in the hope they would have a higher waistband but we are still having the same issues.
They aren't particularly loose around the waist, I could tighten the elastic a bit further but it would make them very difficult for him to pull up and down for going to the loo.
We tried a few before he started school and chose M&S for the slim fit as they fit better (while standing!).
I'm at a bit of a loss as what to do really. Does he have a particularly high waist (not that he really has a waist). Is this a problem for anyone else?! Longer polo shirts would drown him.