Made from tightly woven 10oz, pre-shrunk, 100% organic cotton duck, our double-layered origami constructed masks provide an adjustable fit, comfortable breathability, and are free of plastic, elastic, and metal, making them 100% biodegradable. The masks have an area to insert a disposable filter (paper towel or coffee filter). Hand sewed with care in San Francisco. Available in two styles. The Over-Head style offers all-day comfort and the Over-Ear style allows for quick off and on access. Wash before use and after each use. Masks should be routinely washed depending on the frequency of use. A washing machine should suffice in properly washing a face covering. Machine wash cold and machine dry on low to normal setting. We recommend ironing for crisp folds after each wash and dry. Do not bleach. Per the CDC Guidelines: Be careful not to touch your eyes, nose, and mouth when removing your mask and wash hands immediately after removing.