Specification — 50PCS in a bag. One Size Fits All. Color: Blue Suitable for personal daily health protection — Made of non-woven fabric for easy breathability. RELIABLE — Help to protect you from dust and weather, dust, pollen and smoke, allowing you to breathe normally. SOFT & COMFORTABLE — 3 layer thicken design with comfortable earloop, designed with a full-width nose piece guarantees a proper fit, easily slide over the ear with a soft earloop which holds it securely to you. Adjustable nose seal works for adults and kids, when you wear it , it fits seamlessly into your face. VERSATILE SANITARY TOOL — Perfect for people who travelling through busy city streets, congested airports, bus terminals, shopping malls and parks. Suitable for people who works in construction, nail salons, hospital and so on.