style 1: Features: 1. Easy to use, just replace the pad inside the mask, fast and safe. 2. Filtration Efficiency-our anti-pollution masks filter out fine particles, making them safe for indoor and outdoor use. 3. Advanced Respiratory Protection-These boys, girls, boys anti-pollution masks help protect against dust, pollen to ensure safety, Healthy breathing! Description: Isolated from air dust, mist, pollen grain, car exhaust. Specifications: Material: cotton Color: white type:50/100/200pcs Package Included: 50/100/200pcs x mask pads style 2: Features: 1. Soft and flexible breathable, ideal for Sensitive skin allergy. 2. Mask filter replacement for general mask. 3. 3-layer Anti-pollution material to reduce the risk of inhalation of harmful gases such as odors, pollen, smoke, dust and other harmful particles. 4. Suitable for all kinds of common masks, independent packaging, with double-sided tape to prevent displacement. 5. The mask filter provide comfortable protection for people. Description: 1. Anti-fog and dust-proof, Anti-haze, face protective mask filters. 2. Ideal to protect you from odor, dust, particulate matter, smoke, ,ash and pollen and so on. 3. The use of disposable mask filter can prolong the service life of the mask. Specifications: Material: Non-woven fabric Color: white Size:13*13cm Package Included: 50/100/200pcs x Mask filter replacement