What is tucking ears into baseball caps?

Tucking ears into baseball caps is a common practice among baseball players and fans who want to keep their ears warm or protect them from the sun. It involves pulling the ear flaps of the cap down and tucking them behind the ear. This can also help to keep the cap in place during windy conditions or strenuous activities.

While some people may find tucking their ears into a baseball cap uncomfortable or constricting, others find it to be a practical and convenient way to stay warm and protected while enjoying outdoor activities. The practice is most commonly seen among baseball players, but it can be used in many different sports and outdoor activities.