20oz Rainbow Sparkly Straight Sublimation Tumblers
SUBLIMATION READY SPARKLY TUMBLERS!
I use the dimensions of 8.3x9.4 for all of my 20oz skinny tumblers
No seam line inside the cups
recommended time and temperature:
350 for 5 minutes in convection oven
365 degrees for 30 seconds then turn for 30 more in a tumbler press
Please remember all ovens are different and time and temperature may vary the above are the settings I use but you should always check as you go to be sure