FORLIFE Lucidity Flask Drip-in-Mug with Stainless Steel Dripper and Lid, 12-Ounce/355ml, Charcoal No paper filter needed; A simple functional design gives you an easy way of making great tasting coffee Hand crafted mug is made from borosilicate glass; Remains clear and heat resistant Add 1 to 2 tablespoons of ground coffee into the dripper Unique stackable design offers a convenient space-saving solution All the parts are dishwasher safe for easy cleanup