| Year | Description | Picture |
| 1900 | Head hardness | |
| 1910 | Flat top helmet | |
| 1925 | Zuppke | |
| 1928 | Dayton Triangles helmet | |
| 1934 | Leather and fibre shell | |
| 1950 | Riddell RK-4 | |
| 1960 | Bobby Douglass | |
| 1970 | Marietta MaxPro | |
| 1990 | Riddell VSR4 | |
| 2012 | Riddell Revo Speed | |
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