If you care coffee filters no 4 unbleached 100s large if you care coffee filters are made from fsc certified unbleached totally chlorine free paper they will help keep your coffee tasting pure plus they help reduce the amount of pollution in our environment unlike competition if you care coffee filters have a strong seam and will not break these coffee filters are certified compostable for homebackyard and municipalindustrial composting the box is made from fsc certified recycled boa