Arizona State Sun Devils Authentic Speed Football Helmet. Perfect item for autographs and collectors. This full size Arizona St helmet is designed with extended mandible (jaw area) protection, a steel polyvinyl-coated face mask, chin strap, increased padding, an integrated facemask attachment system and elliptical air vents. NCAA Team name on back bumper. The officially licensed Arizona St Sun Devils helmet is great for autographs and features Arizona St Sun Devils team logo decals on both sides. The striking shape of the future. NCAA Arizona St Sun Devils Authentic Revolution Speed helmet size is 13.5"(L) x 9.75"(W) x 10.25"(H). NCAA Arizona St Sun Devils Full Size Helmet.