Glow In The Dark is a polyurethane heat transfer vinyl that looks great in the daylight and glows in the dark! To get the glow effect, “charge” the material by exposing it to sunlight. The more light you give it, the more it glows in the dark! Great for crafters looking to create kids’ pillow cases with messages that shine at bedtime. Glow in the Dark is also perfect for simple Halloween costumes and is CPSIA Certified so even little ones can get in on the glow in the dark fun!