EasyWeed Glow™ is a white polyurethane matte finish heat transfer vinyl that looks great in the daylight and glows in the dark! You “charge” the material by exposing it to sunlight. The more light you give it, the more it glows in the dark! Create Custom Designs that Glow in the Dark!EasyWeed™ Glow is CPSIA Certified so even little ones can get in on the glow in the dark fun! Actual 12x14.75 inches