Tumblers have a hole at the bottom (closer to the side and not the middle) for inserting glitter and solution!! Seal hole when complete with UV Resin. 

They are coated for sublimation but also work great with permanent vinyl.

For Sublimation: You MUST sublimate the tumbler BEFORE adding your glitter and solution. 

NOTE:

Do not heat the glass in any way, after hole is sealed

Avoid extreme heat after hole is sealed, and do not leave in car during summer heat

Sublimation Instructions:

Temp 356* F

60 Seconds

Light Pressure