The Nanopresso is based on a newly patented pumping system and achieves a maximum pressure of 18 bar (261 PSI) using your hands, resulting in unparalleled coffee extraction quality. This travel coffee maker is so compact and lightweight that you can take it almost anywhere. To reach the pressure necessary for brewing an espresso, which is about 16 to 18 bar, it is equipped with a pump that operates similarly to a bicycle pump. After pumping, you pour hot water from a kettle or thermos into the water tank, press the button, and let the aromatic coffee flow into your cup. This way, you can enjoy your favorite drink on the go, whether on trips, hikes, or during breaks between workouts.