It's also called an athletic supporter and without a cup, it's used to prevent the male genitals from bouncing around in an unhealthy way. With a cup, it's mea

It's also called an athletic supporter and without a cup, it's used to prevent the male genitals from bouncing around in an unhealthy way. With a cup, it's meant for protecting the male genitals from impact in contact sports like hockey or football.