This product provides anti-fouling and anti-fragmentation protection to reduce the spread of infection. Fast and transparent like glass-promote oral communication. It Can be used multiple times, you can disinfect and wash up to 30 times by hand, which means you can easily wear them for several days. Made of materials with special properties that contribute to cleaning. Comfortable nasal pressure adjustment-prevents fogging of glasses, does not interfere with wearing glasses, Its design assumes that people wearing glasses should feel comfortable. There is almost no annoying phenomenon of protective marsks or steam glasses. Size Chart: Length: 25cm / 9.84inch Width: 15cm / 5.90inch Package Includes: 1 Piece Face Cover Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!