Nebraska Cornhuskers Full Size Speed Replica Helmet by Riddell. This full size helmet is designed with a non-wear plate and molded foam jaw pads. a steel polyvinyl-coated face mask, 4-pt chin strap, and elliptical air vents. This officially licensed helmet is great for autographs and features team logo decals. The striking shape of the future. Replica Speed helmet size medium measures: 12.75"(L), 9.25"(W), 9.75"(H). Full Size Speed Replica Helmet. (NOT FOR WEARING)