?Applicable Fields: PM2.5, Pollen, commuting, Biomass burning, Industry Pollution ?Material PP + dc Membrane + ES Special-made ear straps ?Extra Advantages Block particles and oil particles, Utra breathable, ensuring comfort and dryness for extended periods. Washable and Reusable Ergonomic curve design, snug fit without tightness on the face. Special-made ear straps to prevent ear discomfort during prolonged wear. ?Washable Reusable: 1 mask can use for 1-2 days ?Certificated: EN14684 Typr II ?Color: White Packing: 20 pcs/Box, Single pack for each mask Size: 9cm x 17.5cm ± 0.3cm Expiry Date: indicated in Seal Storage: Avoid direct sunlight Made in Taiwan