These should be knee high, with a drawstring to secure them just below the knee.
The man on the bed groaned loudly and elevated one knee high in the air.
I've been that ever since you was knee high to a duck, Phyl.
At no point was it more than waist high and in some places only knee high.
He wore whip-cord jodphurs—protruding widely on either side of his plump thighs—and ...