10 Pcs / Box [Feature] Filtration, BFE > 99% Adjustable nose bridge for a secure fit. 3-ply construction: Exterior Layer: Non-woven, Center: Melt-blown fabric, Interior Layer: Soft, Moisture Proof & Breathable. 17.5 cm x 9.5 cm. Breathable construction, perfect for running or working out. Super soft and comfortable ear loops. Made in Taiwan. Due to the hygienic nature of our masks, we are unable to accept any returns or exchanges. Face Masks are final sale and non refundable.