Thank you for viewing. Use it by putting tea leaves in a mug and pouring hot water. This item was purchased at a stainless steel hardware event. It's stainless steel and hygienic. Convenient for making a single serving. Size: Approximately 17cm (Measurements are approximate.) I think it's almost unused, but it is used. Please refrain from purchasing if you are concerned about minor details. It will be packaged in a waterproof bag. It will be shipped anonymously via Yu-packet Post. The mesh may be deformed during transportation. Please reshape it before use. There may be differences in color between the photos and the actual product.