Sea Hawks "12 Boom" Glow in the Dark Adult Short Sleeve T-Shirt Superhawk 12 Boom GLOW IN THE DARK Adult Short Sleeve T-Shirt Glow in the Dark - Everything That is White on the Shirt Glows in the Dark. High Quality Heavyweight 6.1-ounce, 100% soft spun cotton T-Shirt Large 12 Boom Design is 11 Inches Wide and 11 Inches Tall. Design Professionally Printed in the USA