Mississippi (Ole Miss) Rebels Alternate White NCAA Riddell SPEED Mini Helmet. The ultimate NCAA Southeastern Football Conference mini speed helmet collectible, perfect for autographs and collectors. This is an affordable NCAA football helmet for the true fan. Official NCAA Mini Speed Football Helmet is made with official Ole Miss Rebels NCAA team decals. Each Ole Miss Rebels Mini Speed Football Helmet is made with great graphics, ABS plastic Mini Helmet shells with plastic helmet face guard, realistic interior foam padding and vinyl-leather chin strap. Size: 1/2 scale versions of NCAA football helmets. Size: 6"(L), 4½"(W), 5"(H) - (NOT FOR WEARING).