These mugs are so pretty to look at! So aesthetically pleasing. However, if you didn’t know, there is a little silicone nub at the bottom which you need to be careful not to break/open/remove. So just be mindful that you will need to be careful when hand washing these or making sure to immediately remove from the dishwasher once it’s cleaned because otherwise condensation collects on the inside of the double wall and creates water that you can’t take out. MightyApe was fantastic, they responded to my email within 1 working day and worked hard to resolve my queries!