Glass Sublimation Tumblers are NOT Vacuum sealed like Stainless Steel Tumblers and may sweat in various conditions.
SUMBLIMATION - Our Recommended Baking Time: 375 Degrees for 10 minutes in an oven or 385 for 2 minutes in a press (rotate 180 degrees at 1 minute)
NOTE - SublimationBaking Time and Results may vary depending on processesand products (ink, parchment paper, shrink wrap, etc.) used for sublimation. The Tumbler Supply Store is NOT responsible issues with Sublimation processes.