Mini Revolution Football Helmet. The ultimate NFL mini football helmet collectible, perfect NFL mini football helmets for autographs and collectors. Mini Football Helmet with great graphics. Official NFL Mini Football Helmet with official NFL team decal. ABS plastic Mini Football Helmet shells with plastic facemask. Realistic interior foam padding, vinyl-leather chin strap. This is an affordable NFL 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).