Vanderbilt Commodores Authentic Speed Football Helmet. Perfect item for autographs and collectors. This full size Vanderbilt Commodores 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 Vanderbilt Commodores helmet is great for autographs and features Vanderbilt Commodores team logo decals on both sides. The striking shape of the future. NCAA Vanderbilt Commodores Authentic Revolution Speed helmet size is 13.5"(L) x 9.75"(W) x 10.25"(H). NCAA Vanderbilt Commodores Full Size Helmet.