We had the most hideous gym suits. They were a horrible green in a sort of broadcloth that wrinkled badly. One-piece, cap sleeves, rather wide cuffed legs. Guaranteed to fit no one except those favored few who were destined to go through life charmed.
Gym was 5-days a week (except that we didn't have to "dress-out" on Fridays because we had folk or ballroom dancing on Fridays. Gym was required for two years. If you really loved torture, there was an elective third year.