Comfortable and Breathable Disposable Nonwoven Surgical Face Mask Nelson Report Color: white, green, blue, pink Material: 16g/20g/25g spun bonded polypropylene 3 ply-earloop/tie back 2 ply-earloop/tie back The face mask is ideal for hospital or clinical environments, comfortable, low breathing resistance. Average BFE>98%&Delta<30 fluid resistant The style of earloop The style of tie back Can be customized with different weight of material and color. Materials or other specifications according to customers' requirements.