Riddell Full Size Replica Speed Helmet - Kansas City Chiefs The most popular on-field helmet design is now offered as a Replica display helmet. Medium size Speed shell, with the same facemask and 4-point chinstrap as the authentic version. Includes a nonwear plate and molded foam jaw pads. Not to be used for play. The Speed Pro Line helmet uses the special order facemask worn by most of the star players who choose to wear this helmet. Internal padding is reflective of the Speed Classic design. A.