My best mask so far
Most comfortable mask I have worn so far. The only drawback is the mask will slip down over a long time eventually exposing your nose..like almost every other mask out there. My 2 favorite features are the neck string that allows for ear hold adjustment and carrying the mask around your neck,  and the second feature is the double layer that allows the insertion of a filter for extra protection.  A highly recommended buy.
Rating: 5 stars