Cups, tumblers, and mugs are sublimated.

SD5 recommends hand washing only and to not expose the cup to hot/extreme heat temperatures.

DO NOT MICROWAVE!

Sublimated cups do not need a sealer placed on them with that being said they are not dent or scratch proof. Ink will not come off or fade from washing, but as with anything after a long time there can be fading with regular use and washing like clothing.