Fellow PrismoPrismo is a pressure actuated valve designed to be used with the AeroPress Coffee Maker. This attachment allows for a build up of pressure to brew espresso style coffee and creates a no drip seal for recipes that normally require inverting your AeroPress. To eliminate the need for paper filters, a reusable 150 micron etched filter stops sludge in its tracks and fits directly over your favorite espresso glass to pull a shot at home. Espresso style,