Kendal 10 oz Glass Filtering Tea Maker with infuser Teapot Tea Cup CJ-300 This 10 oz tea maker / cup can be used for hot, iced tea, coffee (bag cofee) brew; Elegant and modern design. Comes with 3 pieces -- glass cup, glass inner cup, and glass lid. All pieces are made entirely of heat resistant borosilicate glass. The inner cup with 12 narrow openings near the bottom acting as "strainer". It is easy to brew the tea. Just put the tea into the inner cup and add some water, then the innner cup releases infused tea directly into the outside drinking cup. After tea is ready, get out the inner cup and you can drink the tea in the drinking cup. Great for the office or when traveling.