The possibilities are endless when it comes to the fun you can have with our Black Light Reactive Neon Color Crayons. This pack comes complete with 6 of your favorite neon colors: Purple, Blue, Yellow, Orange, Fire Orange and Hot Pink. All colors are UV Reactive and glow bright under blacklight! The neon colors also look amazingly vibrant in regular light so you can use these jumbo size crayons are great for all art projects. For a brilliant effect under black light try using these crayons on black construction paper... The effect is amazing!