MODEL 3D-900 Disposable, Three-layer filter : Non-woven fabric. Close Fitting to the face. With a gentle wide Elastic Cloth Ear Band. Lightweight & comfortable for longer wear use. Size + Fittings 18 cm x 14 cm (L) 16 cm x 14 cm (M) 60 pcs. per box. Disclaimer This product is not a medical device and is not a substitute of social distancing and practicing good hygiene, hand washing, and not touching your face. Smart Scholars makes no claims about the medical benefits of using this product.