The design is permanently sealed with a FDA Compliant epoxy...The tumbler will be smooth and durable.
Please handwash only.. the extreme heat from a dishwasher can ruin the vacuum seal within the tumbler (which is what keeps drink hot or cold for so long!)
****If you would like the tumbler to be customized (like a monogram or other decal added), add the customization option to your order. Please leave a note at checkout with customization requests. This can include Monograms, Names, or any other logos added to the tumblers. As the tumblers are sealed with epoxy, all designs are sealed and permanent.