An innovative invention of illuminated apparel makes it possible to create a drawing on the sweatshirt with the use of light, 10 times brighter than previously possible. the special fabric on the sweatshirt will light up your drawing or text as glow in the dark. use the included uv keyring or a flashlight, laser pen or the flashlight of your smartphone and draw or write as with an ordinary pen.in a dark environment the first glow will be brightly visible for 5-10 minutes before it begins to fade. each type of light can be used, but the higher the uv output and more direct the light, the clearer and brighter the glow will be.the sweatshirt is machine washable at 30°c and is available in various sizes.features- sweatshirt can be used indefinitely- glow visibility for 5-10 minutes- including uv keychain- machine washable at 30° (see washing instructions)- available in various sizesproduct information- product: ia interactive sweatshirt super green glow - black (l)- material: 100% cotton- packaging: gift packaging- packaging dimensions: l 30 x w 21.5 x h 4.5 cm- packaging weight: 486 grams- brand: illuminated apparel