From the handle it tears, from the quality fake. The first day I broke one, I accidentally hit it with my hand and it just fell on the side. When you put hot tea in the areas where it has tea, it burns and you can't hold it, only from the top lip. Overall, it gives you the feeling that it will break in your hands.

Very good quality. The thickness of the glass is slightly thicker than the usual cups of this kind. This makes it more manageable when the drink is still hot and you don't have the insecurity that with the slightest wrong movement it can break.