USFL Mini Speed Football Helmet. The ultimate USFL mini speed football helmet collectible, perfect USFL mini speed football helmets for autographs and collectors. Mini Speed Football Helmet with great graphics. Official USFL Mini Speed Football Helmet with official USFL team decal. ABS plastic Mini Speed Football Helmet shells with plastic facemask. Realistic interior foam padding, vinyl-leather chin strap. This is an affordable USFL football helmet for the true fan. Size: 1/2 scale versions of NFL football helmets. Size: 6"(L), 4½"(W), 5"(H) - (NOT FOR WEARING).