These cups have been totally popular with my children and friends, but after a year more or less regular. Use and washing in the dishwasher are roughened the white dots and washed largely. The cups are some (few!) Times dropped and thereby broken out at two edges of several small pieces. These sites are relatively sharp so that the acc. Cup had to be disposed of. I find this cup still totally cute and who only washes by hand, will certainly have long pleasure.