Gair designed to prevent users from the pervasive problems, such as the haze and PM2.5, flu, any health-threatening factors, also outperforms the existing mouth masks failing to meet the expectations of the market in demand. Gair , the latest invention of the air conditioning mouth mask, not only revolutionizes the perception of so-called mouth masks leading a healthier life through introducing positive pressure into the masks to significantly purify the air qualify in breathing but also allows the user to wear for long hours. Improvement of air quality is the world-wide issue is as important as that in the drastic change in global climate.