This helmet is a Full Size Authentic Revolution Speed NCAA Helmet by Riddell. The full size 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 helmet is great for autographs and features team logo decals on both sides. The striking shape of the future. NCAA Authentic Revolution Speed helmet size are 13.5 inches (L) x 9.75 inches (W) x 10.25 inches (H).