Support your support for the Pro Football Hall Of Fame with this Riddell Mini NFL Football Helmet. A half scale replica of the helmet worn in the past, your new mini helmet is great for displaying in your home or office and makes the perfect gift for the true sports fan. Perfect NFL mini speed football helmets for autographs and collectors. 3 5/8. Riddell 2 pt chinstrap with realistic foam interior padding. Size: 1/2 scale versions of NFL football helmets. Size: 6"(L), 4½"(W), 5"(H) - (NOT FOR WEARING). Official Licensed Product.