Warm water will wash off the design.
This purchase is to replace a shot glass of the same design that was bought at an event ~ it was hand-washed gently in warm water and the barbed wire design just slid off. Note -- I'm not talking about the dishwasher or super hot water at the sink, but instead even just careful washing in warm water (my kids don't have "mom hands" thus I know for certain the water temp was only tepid). This new one might be just for the memories (which are great!).
Nice vessel to use to give myself a liquid treat after accomplishing another Tough Mudder. Cheers!