Amazon calculates a product's star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers and factors that establish reviewer trustworthiness.
It's a good mask, washable. But it's way too thick. That thickness will literally sweat your mouth and area around it. It has a breathing valve which, obviously, won't help much if you are specifically buying for covid. For general pollution based filtration it does it's work. Sweating is probably the major issue
Easy to wear, considerably good quality of product as well, but price seems to be bit higher... compared to other premium brand such as honeywell and 3M products... shape looks little awkward but serves the purpose...
Useless mask. Breathing valve is broken. Amazon should refund the money. At the time of purchase there was 10 day return policy but when i tried to return window says it is a no return product. What will i do with a broken breathing valve.