Sea Hawks "12 Boom" Glow in the Dark Adult Sweatshirt 50% cotton/50% poly fleece 12 Boom Glow in the Dark Adult Classic Crewneck Sweatshirt Glow in the Dark - Everything That is White on the Design Glows in the Dark. Large Superhawk Design is 11 Inches Wide and 11 Inches Tall High Quality 7.8-ounce, 50/50 Cotton/Poly Fleece Sweatshirt. Air Jet Yarn for a Soft, Pill-Resistant Finish Design Professionally Printed in the USA