Seattle Seahawks Speed Mini Football Helmet. Our new, distinctively fresh, yet familiar alternate helmet collection adds a colorful twist to your favorite NFL team helmet. AMP Alternate helmets amplify your team logo with big and bold decals on alternate flat helmet shell colors. Official NFL mini football helmet with official NFL team decals. ABS plastic mini football helmet shells with plastic facemask. Realistic interior foam padding, vinyl-leather chin strap. A must-have addition to any collection! Size: 1/2 scale versions of NFL football helmets. Size: 6"(L), 4 1/2"(W), 5"(H) - (NOT FOR WEARING).