Anpanman Glassware Set of 2: Anpanman and Melonpanna-chan I believe it was heat-resistant glass. It has a good thickness and weight, so I think it can be used stably (*´꒳`*) Although not very noticeable, there is a slight print abrasion around the Anpanman characters. Please check the photos. It has been used only a few times, and there are no other noticeable scratches or stains. It is a used item by a child. Please refrain from purchasing if you are sensitive to details or are looking for a perfect item (＞＜) Only those who understand used items, please. The size is listed in the first photo, but there may be a difference of 1-2mm.