1、Universally Fit - The detachable PP base of the pour over coffee dripper glass is design in proper size and allows the glass coffee drip maker stand on any mug or carafe. 2、Unique Spiral Waves Design - Inner swirl design of the glass pour over coffee filter guides water evenly to maintain a proper flow rate that guarantee the water fully penetrates through the ground coffee for ideal extraction of flavor. 3、Easy to Use - Simply heat the pour over coffee filter with hot water and add your favorite coffee grounds. Then, slowly pour in the hot water at the perfect temperature to regulate the flow of water with the optimal turbulence of coffee grounds for ideal coffee extraction. 4、Light and Portable - This coffee filter is enough to serve 1-4 cups of coffee for your family or friends. 5、Glass Dripper Coffee Funnel Dripper Thickened Glass Coffee Cone Brewer Filter with Removable Base