There’s beauty in collecting Phillies Ice Cream Helmets. You know the ones. They come filled with some sad swirl and sprinkles, overpriced and half-melted by the time you find your seat. That’s the ...

Methods: Impact tests were conducted on a selection of helmet models: five cricket, two baseball, and two ice hockey. Ball to helmet impacts at speeds of 19, 27, 36, and 45 m/s were produced using an ...