Come and see our amazing products. Suitable for daily use by boys, girls and kids.(4-12 years).Hand wash not suitable for machine wash,the filter pad can be used continuously for up to 24 hours,can be replaced according to the specific use time.Air with a hole in the mouth and nose makes breathing easier .The design is simple and easy to wear and disassemble. Pls confirm further with us if any query about packing info, inventory status and time schedule.