Kansas State Wildcats Riddell Speed Authentic Football Helmet. Perfect item for autographs and collectors. This full size Riddell Speed 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 Kansas State Wildcats Riddell Speed Authentic Full Size Helmet is great for autographs and features Wildcat team logo decals on both sides. NCAA Kansas State Wildcats Riddell Speed Authentic Football helmet size is 13.5"(L) x 9.75"(W) x 10.25"(H)