I love the design on these mugs but wish the images were a little crisper, but then again, hand painted porcelain like this would be way out of my price range.  The mugs are thin but durable and comfortable.  Stated on the bottom is printing that they are freezer safe and I can attest to the fact that they are microwave and dishwasher safe also as stated. I got tired of buying hand painted stoneware only to have it chip.  These are durable and fun and the magical characters make me happy. Because they are a bit thin they tend to be hot to handle, compared to thicker stoneware, and speaking of handles, these accommodate three fingers, not four, but are simply and beautifully designed.