Size and fit Compact refillable coffee filter: 3.6 x 3.6 x 2.8 cm (external dimensions). Small footprint fits holders or brewing setups that accept a filter of these dimensions. Materials and construction Builtin permanent stainless steel mesh filter for reliable filtration and long service life. Durable, washable construction designed for repeated use. Capacity and performance Holds approximately 20 ml of coffee powder for a single small cup or concentrated shot. Reusable design maintains consistent extraction without paper waste. Key benefits — why you need this Reusable and refillable: reduces ongoing cost and singleuse filter waste. Stainless steel mesh: no paper taste, fast flow, and easy to clean for reliable daily use. Compact and portable: small size makes it convenient for travel, office, or a small kitchen. How it solves common problems Eliminates repeated purchases of disposable filters. Keeps extraction consistent while avoiding clogging or tearing associated with paper filters. Simple to rinse and reuse, minimizing downtime between brews. Practical use scenarios Home singlecup brewing: use the 20 ml capacity to brew a small, concentrated cup without paper filters. Travel and camping: compact, lightweight filter that fits in travel kits and is easy to clean on the go. Office or shared spaces: bring your own reusable filter to reduce waste and avoid storebought pods or disposable filters. Care and maintenance Rinse after each use; occasionally deepclean the stainless steel mesh with warm water and mild detergent. Inspect mesh periodically to remove trapped grounds; no replacement paper filters required. What's included One refillable, reusable coffee filter with builtin permanent stainless steel mesh (3.6 x 3.6 x 2.8 cm) and 20 ml coffee powder capacity.