Welcome to MysteryFootball, the UK's #1 provider of obscure mystery football shirts! 📦 Here's how it works: Select your box and choose your size. If you're between sizes, we recommend picking the larger one because shirt sizes can differ between manufacturers. Place your order. If there are specific shirts or teams that you don't want to receive (if you already own them, for example), you can let us know in the comment box at the checkout. Receive your mystery football shirt. This could be from any team and any league in the world, but is guaranteed to be a rare design that you won't find anywhere else.