Shirts? You never saw nowt like that back when I were a lad. We didn't have boots, a pitch, a piece of hard concrete - we didn't even have a ball. Once a week, if we were lucky, we were allowed to sit on floor and imagine us playing football. That were sports day, that. And even though we only imagined game, we still ended up getting relegated.
We used to play with a branch,a twig, in the yard at lunch time, because balls weren't allowed. now that developed skills.