Product Description: High Quality - Sturdy sides won't collapse during brewing. This minimizes coffee grounds getting into your coffee. Superior Taste - Paper filters remove most oils and micro coffee particles which cause coffee to turn bitter. Metal and cloth filters can let these into your cup. Eco-friendly - Biodegradable and made from paper, a renewable resource. Easy Clean Up - Disposable filters mean that you can toss the grounds without needing to clean out a metal filter. 【Material】Basket coffee filter paper is made of natural pulp.The paper is fine and has a uniform texture. 【High Efficiency Filtration】The wavy edges allow the water to flow down evenly, combined with a flat-bottomed buffer, filtering without residue, which is good for coffee extraction. 【Not Easy to Collapse】Coffee filters won't collapse during brewing. 【Eco-friendly】Non bleached coffee filters are eco-friendly, biodegradable. 【Great Taste】Paper filters remove bitter oils that are left behind by other kinds of filters.