Reusable Refillable Single K-Cups Filter Pod System Compatible with Keurig 1.0 Coffee Makers in Various Pack Sizes Use your own gourmet ground coffee in a Keurig brewer--Just fill the Reusable filter with your favorite coffee and pop it into your brewer.....Just like a regular K cup 100% BPA free No need to remove or swap out the filter holder; Built-in permanent stainless steel micro mesh filter Works in Keurig B31, B40, B44, B60, B50, B66, B70, B77, B200, B140, B145, Breville Kcup, Mr. Coffee Kcup , Cuisinart Kcup They are NOT compatible with KEURIG B30 - B130 - B150 - B 155 or any 2.0 System They work only for 1.0 Keurig System only. This is an aftermarket item made to fit Keurig Coffee Makers FEEDBACK: We will leave feedback after receiving a feedback. If for any reason you are dissatisfied with your purchase, please contact us immediately before leaving any NEGATIVE FEEDBACK so we resolve whatever issue you may have. 100% Customer satisfaction! Sales Tax: CA residents will be charged sales Tax SHIPPING: Orders are usually processed within 24-48hrs. All weekend purchases are shipped Monday. Tracking information is periodically updated by the shippers. Please note that we do not have any control over this. ALLOW 7-10 BUSINESS DAYS FOR DELIVERY. Item is well packaged before shipping. We ship to all 50 states. CONTACT US: Have any question(s) contact us in contact seller. RETURNS: Returns are accepted but must be authorized in advance.