Crazy Aaron's Glow in The Dark Mini Tin Assortment Glow-In-The Dark Mini Tin Assortment includes Krypton, Amber, Ion and Aura Each metal tin is 2" in diameter and is packed with 0.47 oz. of Thinking Putty You receive one tin of each Hypercolor Made in the USA of non-toxic silicone, never dries out & is easily removed from solid surfaces For ages 3 years and older