Made of purple clay from Yixing, China. The wide base of this teapot is suitable for large leaves like oolong or white tea.
Yixing is well-known for the quality of their clays and how the clay can add some minerality to the water, hence improving the flavor of the tea you're making.
Another one of the benefits of brewing tea in this kind of teapot is that the clay will absorb the flavor of the tea. Over time, your seasoned teapot will begin to give flavor back, enriching, and enhancing the flavor of your tea.