[Premium] The tea cup filters are made of high quality 304 stainless steel. All parts are made of safe materials that are harmless to the body, have no peculiar smell and no harmful chemicals. The tea net is ultra-thin, with over 6,000 water holes, and the round holes are as small as 0.5mm. This means a better cup of tea with less flutter and a smoother taste. Definitely a must have for tea lovers. [Foldable Handle & Insulated Lid] Our single cup teapot has a foldable handle, you can take it with you as it folds neatly into your bag, and the long foldable handle prevents you from burning your fingers. The steeped tea diffuser comes with a lid, so your tea stays hot and fragrant while it steeps. After steeping, the lid flips over to become a handy coaster. [Large Capacity] The large capacity is perfect for letting your tea expand and breathe fully, providing plenty of room for you to the tea leaves fully unfold and provide maximum flavor. Its shape and size allow water and tea to mix