These are custom sublimated glass tumblers aka glass cans, that are as unique as you are! You'll receive the glass tumbler, a bamboo lid with a BPA-free plastic straw. The glass is frosted with a white coating which is still transparent. 

The glass used for creating these beautiful custom glass tumblers is high borosilicate glass. This kind of glass is commonly found in reagent bottles, flasks as well as lighting, electronics, and cookware.