Newest Design, Unievrsal Compatible: Compatible with Keurig 1.0: K15,K31,K40,K45,K55,K60,K66,K70,K75,K77,K80,K100;B31,B40,B44,B50,B60,B70,B77,B100,B140,B145,B200,B300. Keurig 2.0 Brewers: K200,K250,K300,K350,K360,K400,K450,K460,K500,K550,K560. As well as the following brewers: Keurig Elite, Keurig Select, Keurig Classic, Keurig Ultra, Keurig Special Edition, Keurig Ultimate, and the Keurig Platinum. Breville K CUP, Mr. Coffee K CUP. Well Made & Durable: Our Reusable Coffee Filters suit included 4-pack cups and each one could use many times. With our refillable k cup coffee filters, you can stop buying disposable K Cups that salve a lot of cost! Our k cups will help you minimize all Keurig brewing accessories expenditures, allowing you to get more out of your blend purchases, all the while helping you remain environmentally conscious, too! BPA Free High Quality : These Reusable Coffee Pods are made from high quality materials, food grade stainless steel, which is 100% dishwasher safe and through the HOT water will not take hazardous substances! One-piece design with stainless steel high heat resistant mesh system. Helping produce the best coffee you never had! Eco Friendly & Safe: The Reusable k cups are not only excellent for you and your personal enjoyment, they are also extremely helpful to our planet. Help reduce your carbon footprint by reusing the refillable k cups all while enjoying your favorite coffee. Our ridge-less design on the inside also makes cleanup a breeze. Customer Support: We strive to provide unmatched customer service and support. If you are not satisfied with our products or have quality problems, please contact us and we will provide kindly service.