These masks are one-size fits most. They are made with high quality certified organic cotton and lycra ear straps for maximum comfort. The lycra is looped into the mask but left untied to be customized to fit your face. Once you have the size you want for your ear straps; tie the lycra in a tight double knot and cut away any excess. You can then push the knotted area into the loop to hide the knot.
Please machine wash your mask before use. Most importantly please understand that we are not in the medical field and we are not saying that this mask will prevent you from contracting COVID-19.