GREEN BAY PACKERS ON-FIELD ALTERNATE NFL AUTHENTIC Speed Full-Size Riddell Football Helmet – NEW in RIDDELL PACKAGE! Full Size Speed AUTHENTIC NFL Helmet by Riddell. Full Size Authentic Revolution Speed NFL Helmet by Riddell. This 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. The officially licensed helmet is great for Autographs and features – Team Logo Decals and Team Colors! The striking shape of the future. NFL Authentic Revolution Speed helmet size is 13.5″(L) x 9.75″(W) x 10.25(H). NFL Full Size Helmet. Steel polyvinyl-coated face mask, 4-pt chin strap, and elliptical air vents. The officially licensed NFL Helmet is Great for Autographs and features Team logo Decals and Team Colors! NFL AUTHENTIC Speed helmet size measures. 13.5″(L) x 9.75″(W) x 10.25(H). NFL Full Size Speed AUTHENTIC Helmet.