Kansas City Chiefs Riddell Speed ECLIPSE 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. This officially licensed NFL Kansas City Chiefs helmet is great for autographs and features red Kansas City Chiefs team logo decals on the matte black helmet with a black facemask. NFL Kansas City Chiefs Riddell Speed Authentic helmet size is 13.5"(L) x 9.75"(W) x 10.25"(H)