ESPRO took the best parts of a traditional press (flavor, simplicity) and left out the worst (grit in your cup) with their patented double micro-filter. The ESPRO Press P3 has a unique patent-pending Safety Lock™ to keep the glass in place while you pour, yet releases easily with a twist. Just add coffee grounds or tea, then hot water. Stir. Wait 4-5 minutes. Press. Enjoy.