Seattle Seahawks Super Bowl 48 XLVIII Champions Riddell NFL Speed Mini Helmet. The greatest miniature sports collectible ever! Approximately 1/2 scale versions of NFL helmets. ABS plastic shells with plastic face mask and authentic-looking team decals. This helmet has become a staple in the collectibles market for several good reasons. 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!