Iowa State Cyclones Satin Black Riddell Speed Replica Full Size NCAA Helmet. This full size Iowa State 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 Iowa State team logo decals on both sides. NCAA Iowa State Cyclones Riddell Speed Replica Full Size Football helmet size medium measures: 12.75"(L), 9.25"(W), 9.75"(H) (NOT FOR WEARING)