Miami Hurricanes Chrome Mini Speed Football Helmet. Chrome Alternate helmets used a vacuum-metallization process to transform each helmet into a mirror-like chrome finish. The result is a striking interpretation of your favorite teams look. Chrome Alternate helmets are sure to impress! Official NCAA Chrome Alternate Mini Speed Football Helmet with official NCAA team decal. ABS plastic Mini Speed Football Helmet shells with plastic facemask. Realistic interior foam padding, vinyl-leather chin strap. This is an affordable NCAA football helmet for the true fan. Size: 1/2 scale versions of NCAA football helmets. Size: 6"(L), 4½"(W), 5"(H) - (NOT FOR WEARING).