I’m busy making face masks at the moment. I’ve made well over 100 and they’ve been posted all over the country. They are 3 layor with a polyproylene liner. They have a pocket to allow an additional filter to be added. The ear loops are made of elastic but I include a separate button back. This means that you don’t need to loop them around your ears but can attach them behind your head instead. Very useful for glasses wearers or people with hearing aids.