4 LAYERS MASK: 4 Ply Disposable Masks with ASTM F2100 Level 3 (Bacteria Filtration Efficiency > 99%) include 4 protection players system designed to offer comfortable, high breathable and perfect fitting your face masks. + Outer material: PP Spun-bond non-woven fabric + Filter layer: PP Melt Blown non-woven fabric + Antibacterial Fabrics: High-class antibacterial non-woven fabrics, water proof, preventing bacteria from outside environment + Inner material: PP Spun-bond non-woven fabric, soft and high quality for contacting with skin. Body Size: + Lengh: 175mm + Width: 95mm  Length of Ear-loop: 165mm Length of Nose-bridge: 105mm