If your mask is too big - consider a 6 inch adjustable ear saver. If your mask is too small - consider a 7 inch adjustable ear saver.
Our biodegradable ear savers are 3D printed locally by a friend in their home in Fremont from Timberfill Fillamentum. We are selling them at cost. Our plastic ear savers were purchased in bulk on Etsy and we are selling them at cost. Read the Ear Saver FAQ before buying.