NEON Sidewalk Chalk Washable Colors and Glasses

NEON 3D Sidewalk Chalk with 6 Washable Colors and 3D Glasses by Crayola These 3D glasses work using a process called Chromadepth. Basically there are prisms in the glasses that disperse the colors based on their color frequencies and enhance the bending of the light. It is the same as when a rainbow is made by the refraction and bending of light through rain drops. The blue colors bend more and red warm colors not as much, like the top and bottom of a rainbow. This method is preferred to the