These 100% Organic Cotton Reusable Coffee Filters save you money at the store & help to reduce waste! The Cloth Coffee Filters are a Size #4 Cone Filter but they also work for #2 Filters, & they are made with GOTS Certified, 100% organic cotton fabric. These coffee filters are sewn together with polyester thread for strength & durability. However, I do have organic cotton thread available, as well. If you prefer that your coffee filters are made with the organic cotton thread, please let me know by leaving a note for me when placing your order. How to use & care for your Reusable Coffee Filters -Before your first use, boil your Reusable Coffee Filters for 10 minutes & air dry. - When you’re ready, use your Reusable Coffee Filter to brew your perfect cup of eco-friendly coffee! -When your grounds have cooled, dispose of them how you would like. There are many great uses for used coffee grounds, such as composting, pest repellent, fertilizer & so much more! -Rinse your Cloth Coffee Filter with water & air dry for next time! -To Deep Clean & Sanitize your Filter, boil for at least 10 minutes, as needed. Reusable Organic Cotton Coffee Filters/Zero Waste Kitchen The Eco Hippie