Product parameters:Cotton filter material: microfiberShell material: acrylic + rubberSize: one sizeStructure: Plastic body， filtering together， exhalation valve， drip valves and lacing five parts.Wearing styles: strap styleFeatures:1. Great for filtering small dusts， mists， metallic fumes， spray paint， chemicals and small flying particles of LOW toxicity2. Easily adjustable strap3. The soft Gel-Like nose and mouth cover will fit all usersPrecautions;Due to manual measurement， size will be slightly error!Product List:Mask * 1