12oz Blank kids sublimation water bottles. White changes to a color in the sun and also glows in the dark. Double coated for sublimation printing.

In order for it to glow it will need to “charge” in the sun or under a uv light first. 

All cups glow green in the dark. 

I usually cook at 350 for 5 minutes in a toaster oven on convection setting. The smaller the oven the faster and hotter they will process. So check as you go every 2 minutes to be sure until you find your sweet spot for these. 
I do check these as I go usually because the coating that makes them change color will also make them take less time to cook the image on.