Crazy Aaron's Putty .47 oz Mini Canned Assortment - Pack of 12 is awesome! Set of 12 different 2.0-inch cans, including heat-sensitive hypercolors, super illusions, and glow-in-the-dark. Heat Sensitive Hypercolors - These heat sensitive putties change color as you play to reveal their dual nature. - Super Illusions - The secret behind Super Illusions ... It's something called thin-film interference, also known as iridescence. - Glow in the dark - Start a simple white by day, but come alive at night in mesmerizing hues that glow for hours. Made in the USA from non-toxic silicone, it never dries and is easily removed from solid surfaces. Gluten-free, latex-free and amazing for special needs, party favors and more. It is a great gift and is perfect for schools, educational toys, party gifts, preschoolers, baskets, special needs, promotions and much more. For ages 3 and up, fun for the whole family.