Kansas City Chiefs Riddell NFL Replica Revolution SPEED Mini Helmet. The greatest miniature sports collectible ever! Approximately 1/2 scale versions of NFL helmets. Riddell's Speed helmet has taken the football world by storm - and now, the speed helmet is available as a licensed mini helmet. With a distinctive, aggressive shell design, the speed helmet is being adopted by premier athletes at a furious pace. As a collectible, the NFL Speed mini will be available in all 32 teams, as well as select colleges coming soon. The Speed mini helmet uses the special order face-mask worn by most of the star players who choose to wear this helmet. Internal padding and chinstrap comes standard. It's affordable, doesn't take up too much room and showcases an autograph like nothing else! Once you start your collection you'll be hooked!