This offer includes GRAY color + 3 PM 2.5 filters Cotton protective mask with a valve and a filter compartment and additional visor . The mask includes 3 PM 2.5 class filters. These are high-quality, adjustable masks. The filters have 5 layers, not cheap 3-layer ones that look almost identical. The masks can be hand washed and ironed. One filter lasts for approximately 30 hours of continuous wear. The filters can be inserted into any mask. The mask does not completely adhere to the face, creating an air chamber, making breathing much easier. Each mask is individually factory-packed. High-quality, 5-layer, efficient replaceable filter lasting approx. 30 operating hours. The filters can be quickly and easily replaced. The masks can be washed and ironed. Easy adjustment helps fit the mask to any face shape. Air is inhaled and released through a 3-piece automatic valve. The mask comes with three 5-layer PM 2.5 filters. The filter lasts for several dozen hours of continuous use. You'll know when the filter is worn out by its color. We offer masks and the highest quality filters. Despite the lifting of the requirement to wear masks on the streets, it's worth taking care of your health and that of your loved ones. All our masks and filters have certificates for anti-smog masks and filters, as well as filtration and quality tests. Each mask and filters are factory-sealed. More models are available in our other auctions, including masks for children, sports masks, and masks with face shields. Each of our masks has a nose plate , is made of several layers of high-quality cotton and is factory-packed. It has even elastic bands and triple elastic bands. Unfortunately, product reviews are also combined with offers from other sellers who prey on the quality of our product, which we regularly report to the administration. Mask dimensions: 21 x 14 cm Filter dimensions: 12 x 8 cm Frequently asked questions: Q: How do I wash and disinfect the mask? A: Hand wash 30 degrees. Disinfection from the outside with an alcohol agent min. 65%. Dry. Iron, avoiding the valve and elastic bands. Q: The breathing valve isn't working, is it a fake? A: The breathing valve is only intended to aid breathing. We breathe through the entire surface of the mask. Q: Do these masks fog up our glasses? A: It fogs up significantly less if it's properly tightened and the nose plate covers the nose well.