Review on Internal Comfortable Breathing Protector ，Washable by Shawn Parker

I should have given this product 4 stars because I only received 15 pieces and not 16 pieces as promised. The quality seems solid and also delivered on time. I have purchased this item before but from a different seller. These seem to be a little more durable. I like to use them for the extra breathing space they create between my face and the mask. The best part is that it prevents my glasses from fogging up while wearing them.