The BOXRAW Mask has been engineered for lifestyle and training use with 4-layer patent-pending innovation, featuring technology to maintain airflow and combat the spread of bacteria. The unique anti-microbial spacer and adjustable single-strap prevent face and ear irritation that comes with traditional facemasks. *Please note for hygiene reasons we cannot accept returns on this product. Layer 1: Anti-microbial shell fabric (88% Nylon, 12% Polyester) Layer 2: Meltblown filtration layer (98% Polypropylene, 1% Polyurethane, 1% Polylactic Acid) Layer 3: Activated carbon filter (50% Activated Carbon, 50% Non-Woven Fabric) Layer 4: Anti-microbial spacer mesh (100% Polyester) technology Increased airflow Adjustable elastic buckle Comfortable custom nose wire Machine washable