Anti-dust PP Fiber Face Mouth Masks PM2.5 Filter Mouth Cover for Men and Women
1.This mask is made of four layers of composite nano, which completely blocks particulate matter, allergens, second-hand smoke and other harmful substances.In addition, PM2.5 has a filtration efficiency of up to 99%.
2.High-density polymer lithium battery and the self-developed energy-saving module, you can charge the mask once and can last for 4-8 hours.
3.This mask has three-stage speed regulation function,You can adjust the required air volume for daily wear by one-touch adjustment. It can reduce the feeling of suffocation when you wear it.
4.This mask is ultra-thin and ultra-lightweight which is easy to carry.It is double detachable and the outer layer is washable.what’s more.The internal filter of this mask can be used repeatedly to save replacement costs.