3D-printed earhole covers for football helmets are helping players hear better

The sight was a common one for Andrew Kolpacki. For many a Sunday, he would watch NFL games on TV and see quarterbacks putting their hands on their helmets, desperately trying to hear the play call from the sidelines or booth as tens of thousands of fans screamed at the top of their lungs.When the NCAA‘s playing rules oversight committee this past spring approved the use of coach-to-player helmet communications in games for the 2024 season, Kolpacki, Michigan State’s head football equipment...