Very cute tea glass. It’s double-walled: glass inside, plastic outside. No dishwasher safe. There is a strainer on top, but doesn’t really allow the tea to steep, even if you pour the hot water slowly, as the water simply drip. It’s only when the glass is ¾ full, and when the leaves are deployed, that the water remains on top of the strainer several seconds longer… meaning you have to watch the water drip and slowly pour more water if you want more of a steeping effect. Overall, I am disappointed with this product simply because you can’t steep your tea in it. Plus, it’s a glass (not a travel mug). It’s pretty, I will give you that, but kind of useless.