These are for people who need to but don't want to wear a mask. They make breathing much easier, more pleasant and more comfortable. They don't sleep either. The extra crease above the nose helps. If you don't want to wear a mask it doesn't really matter, it goes up and down easily. Some of them fit better than others. It also only takes a minute to add an elastic band for the ears. The only reason I bought these is because I use cooling scarves and need a washable sanding/sanding dust mask. It's better than tying a bandana behind your head.
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