When tea is ready, simply place it atop your cup. This will cause a valve at the bottom to release: crystal-clear tea flows down, while the mesh filter retains all the leaves with one of the best infusers on the market. Easy to clean and dishwasher safe. Made in Taiwan with Tritan, a plastic specially-formulated to be safe in hot-temperature applications and is 100% BPA-free. IngenuiTEA includes a BPA-free plastic filter basket. The entire unit is microwave safe. Also includes a handy drip-tray. 3.5" Diameter. 16oz.