ESTIMASK.COM

There are known masks for face protection from the inhaled air with a dangerous impurity (such as dust, water drops with bacteria and viruses and others) or for protection of surrounding people from the exhaled air with dangerous impurity... The disadvantage of all these known masks is the limitation of time of their effective continuous work. After it the mask needs to be removed (from face), changed or cleaned, or recharged (filter). Also during these processes the person is without protection.