This Review Title is Too hot but it does work and the content is: We live in South Korea which has a lot of pollutuon.  I have asthma and allergies and if I wear a vog mask, it does seem to help.  But I find riding a bike or even walink on a warm day too hot in this mask.  I sweat and feel lile I cannot get enough air.  I desperately need another alternative to this mask.  😔.There are other information for this review, one is This reviewer did not purchase it and the other is 0 people think this review is helpful.