I have ordered 2 scorpion mask/ filters in the past for my son because he had to travel. I was recommended by my niece as the only mask she could wear all day. I then ordered another for my other son - a teacher, as well as 2 for myself and my husband. After this order was finialized, I requested a 3rd set be added. I received notice back that it would be added, and all orders arrived in a few days. Masks are moldable, secure, and easy to breath and talk while wearing. Thank you!