Weave glass mug and teapot with porcelain infuser are best used with large leafed tea. You can watch the tea brew as it flows through the holes of the infuser so you know when it is perfectly brewed. The lid can be flipped over as an infuser rest. Designed for easy pickup, the insulating ceramics infuser with holes in beautiful pattern which is inspired by the surface of soft diamond shape of a crisp newly formed leaf. Ceramics infuser is a breakthrough as the common materials are stainless steel which is too hot to pick up and silicon which may cause hygiene issue. With mug and teapot sizes, this tea set is great for use at home or at work.