SHRINK WRAP for 20 oz skinny tumblers for sublimation. Clear or white. Tumbler NOT included. **Clear shrink wrap requires a lower baking temperature (approximately 315-340° F) compared to the white shrink wrap (350-400°F). Add an additional 1-3 minutes bake time when using clear shrink wrap. Both are suitable for sublimation and is dependent on personal preferences.  REMOVE THE PLASTIC LID BEFORE SUBLIMATING. Use a heat gun to shrink wrap the tumbler completely after the transfer has been taped well to the outside. Then sublimate in a convection oven. Times vary due to differences in convection ovens, but a starting reference is 400° for 4-5 minutes. Test your own equipment for best settings for you.