MATERIAL: made of soft polyester cotton fabric,can be used repeatedly,durable and environmentally friendly.ONE SIZE FITS ALL:high elastic string covered in the back of hat,adjust the size as different head size, recommended for use within 21.5~25.5 inch head circumference.BREATHABLE:mesh design makes great breathability,take it easy even for a long time to work at high temperature.KEEPING HAIR COVERED:well working its job,keeping hair out of the way and helping you in good working state.APPLICATIONS : suitable for chef,servers(waiter/waitress) ,industrial workers,cleaner,baker,Can use at home kitchen,coffee/juice shop,food market,restaurant,school,warehouse,any work place etc.