Need an ECO friendly long lasting mask to protect yourself and your family? The answer is Real Silver Plus! South Korean company producing top quality Real Silver masks with antibacterial and sterilizing function (!!) Our product is entirely new in South Korea and has passed various clinical trials and performance tests. Here's some information about the protective layers of Real Silver Plus Mask. External layer: breathable mesh fabric Middle layer: a PURE SILVER film coated on each single thread => antibacterial and sterilizing function (!!) Internal layer: soft and anti-allergic fabric Therefore Real Silver Plus Mask is: Washable (only with soap and water) up to 100 times ! Not causing damage to the skin Easy breathing. Ideal also for athletes Quick drying, prevents sweating.