One Size - Fits All, however on larger faces may not completely cover both chin and nose together.  Has no metal strip inside Nylon And Copper Ion Soft Spandex Fabric - 2526 PPM Two layers -  Inner layer is Nano Copper Ion Fabric 200 GSM 85% Polyester + 15% Spandex  Outside Layer is Warp Knitting Water Resistant Fabric 180 GSM 82% Nylon + 18% Spandex
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