Review on Cotton Dustproof Adjustable: The Ultimate Washable Reusable Solution by Wayne Girard

Multiple shifts. I received this in view of a trip abroad in February/March where I was aware of covid19. That's convenient. I've been using it since February (now October). Nice design but the small o-ring was easily lost and I can't find a replacement. They provided 4 but I have 1 left so I tie the ear loops causing the elastic loops to fail. I like the pocket for spare filters. I suppose I could buy more elastic and hand sew on new loops. I think they filter much better than a single layer of fabric. I wish I had another one like this.