This is a STOKE tea infuser. It has been used once, washed, and stored. Original price: 1,870 yen Snap-in type The following is an excerpt from the official website: Precision design for a clear cup Each hole is designed to be a precise 0.03mm in size, effectively catching even fine tea leaf particles. You can easily enjoy clear and refined tea without sediment. Heat-resistant design for smooth usability The tea infuser can be easily removed by simply pinching it. Made of heat-resistant materials, you can safely take it out even immediately after pouring hot water.