South Florida Bulls White Riddell Speed Mini Football Helmet. The ultimate NCAA College mini football helmet collectible! The perfect NCAA mini football helmets for autographs and collectors. The Riddell Speed mini football helmet comes with great graphics. It is the Official NCAA Riddell Speed mini football helmet with official NCAA team decals, ABS plastic Speed mini football helmet shell with plastic facemask, realistic interior foam padding and vinyl-leather chin strap. This is an affordable NCAA South Florida Bulls Riddell Speed mini football helmet for the true fan. Size: 1/2 scale versions of NCAA Riddell Speed football helmets. Size: 6"(L), 4"(W), 5"(H) - (NOT FOR WEARING)