DIY materials: This product consists of three layers, the outer layer is a water-resistant non-woven cloth, the center layer is a meltblown fabric, and the internal layer is a skin-friendly layer, together with elastic ear strains and a bridge of the nostril， You are able to do it your self. Soften-blown fabric: Excessive-quality melt-blown fabric has robust barrier properties, good adsorption impact, and may successfully filter particles, mud and dust，Handy and hygienic. Outer non-woven cloth: excessive density waterproof, can successfully block massive particles, waterproof, anti-fog, moisture-proof, gentle / breathable, non-irritating to the pores and skin, can play a great waterproof impact. Pores and skin-friendly layer: the internal skin-friendly layer, the floor is evenly dense with pores, breathable and comfy, no burr, making you extra snug to put on, wholesome and no odor. Straightforward to make:appropriate for most individuals，May be sewn with a stapler, handbook or stitching machine. Outer non-woven cloth and center meltblown cloth, internal skin-friendly layer, straightforward to make by hand.