Buffalo Bills Full Size Authentic Speed NFL Helmet by Riddell. This full size Football Team 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. NFL Team name on back bumper. The officially licensed Buffalo Bills helmet is great for autographs and features Football Team team logo decals on both sides. The striking shape of the future. NFL Football Team Authentic Speed helmet size is 13.5"(L) x 9.75"(W) x 10.25"(H). NFL Washington Football Team Full Size Helmet.