Riser Displays feature a black acrylic base, premium metal riser in brushed gold finish and ultra clear handmade acrylic cover. Show off your priceless memorabilia while protecting from dust and dirt. Safely stores and displays 1 Speed Helmet. Sized to fit up to Speed Helmet size with an extendable jaw area protection and bigger crown. (Speed Helmet not included) Inner dimensions: 15" x 11" x 11" Outer dimensions: 16" x 12" x 12-13/16"