Feature: Adopting high transparent, medical-grade FDA-approved material and according to the medical device manufacturing standard to manufacture, which is safe and quality guaranteed. Using low resistivity and electrostatic compound filter to get high-performance filtration effect. With invisible effect design, which will be more convenient and beautiful to wear. Designed according to the natural shape of your nostrils, which is very comfortable to wear. It can filter the haze, dust, exhaust, smoke, virus to give you a free breathing environment and away from the air pollution. Offers relief from nasal allergies, allergic asthma, rhinitis, and sinusitis. Double filter give you double protection. Specification: Condition: 100% New Filter Material: Ultrafine Fiber Filter Frame Material: TPE Optional Frame Diameter:M: 9 mm / 0.35 inch L: 11 mm / 0.43 inch Quantity: 2Pairs Of Nasal Filter Frames Applicable environment: 1. The air quality of light pollution to the above weather, such as haze, dust and so on. 2. Living in the dust, pollen, catkins and other small allergens-intensive environment. 3. Long-term in the dust and other particulate matter-intensive places, such as production plants, construction sites, etc. 4. House decoration, smoking places, cooking and so on. 5. Public transport, subway, railway stations, bus stations, shopping malls, hospitals and other personnel-intensive public places. Instructions: 1. Tear apart the product aseptic sealing layer along the inner packing label. 2. Remove nasal cavity filters, the letter side toward the face, distinguish the left (L) / right (R) nasal cavity. 3. Put the the filter into the nasal cavity, adjust the best location through the nose breathing. Please ensure the correct wear to achieve the best protection and stealth effect. Package Include: 2Pairs Of Nasal Filter Frames Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.