Central Florida Golden Knights Full Size Speed Replica NCAA Helmet by Riddell. This full size Tulsa 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 NCAA helmet is great for autographs and features Central Florida Golden Knights team logo decals on both sides. The striking shape of the future. NCAA Central Florida Golden Knights Replica Speed helmet size medium measures: 12.75"(L), 9.25"(W), 9.75"(H). NCAA Central Florida Golden Knights Full Size Speed Replica Helmet. (NOT FOR WEARING)