3 layers structure: non woven fabric, high density filiter layer, skin friendly composite fiberColor: blue onlySize: 7 * 3. 74inType: disposable masks for dust protectionFunction: this 3 layers disposable mask can easily stop water seepage provides a better ability to block fine particlesPls be noted: this is a disposable mask, the protective effect lasts 8-10 hours, avoid continuous use for many days, you must destroy and replace the new mask after used

• 50 Pack mouth masks: package includes 50 pack fashion disposable face masks, large quantities are enough to meet your demands

• 3 Layer dust mask construction: made of non-woven fiber fabric with 3 layer, soft and breathable, provides a effective protect

• Best size for you: Our face masks are suitable for adults and children

• Elastic ear-loop: which can be adjusted its tightness; One size for most adult men or women

• Widely used: Used for outdoor cycling enthusiasts, home decoration, all the filter efficiency indicators are above 99%, effective dust prevention, PM2. 5 industry, irritant gas, haze, particulate matter, allergy, pollen, automobile exhaust, etc.