Product Description : Top Layer: 20 GSM Spunbond non -woven. Middle Layer: 25 GSM (SMMS with >95% BFE ( Bacteria Filtration Efficiency). Bottom Layer: 20 GSM Spunbond non â??woven. Ear Loop : White Tie Disposable Elastic Band 3mm Rope. Metal Edge: Very smooth and adjustable in a pinch. Minimum Quantity : 100000 Pieces