We have a few glasses of the Lutz Mauder series and are very satisfied. They are the favorite lenses of our children and they are in constant use. We put in the dishwasher and you see it not the glasses. A glass is broken at the fall on the floor, but it's now even a glass. The quality is still great and the motives for children. Here at the toy store, the glasses cost 4.29. I can recommend the Gäser.
