The Rapid Tea Maker is made of BPA free plastic, heat resistant to 100 degrees C, with an extra fine infuser for tea leaves. It is dishwasher safe, suitable for different cup sizes and has a 16.9 fl. oz. capacity. Simple place the loose leaf tea in the pot, add hot water, steep 3 to 5 minutes, and place over a cup to rest. The tea flows through the bottom, into your cup for a perfect tea experience!