DIY materials: This product consists of three layers, the outer layer is a water-resistant non-woven material, 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 might successfully filter particles, mud and filth，Handy and hygienic. Outer non-woven material: excessive density waterproof, can successfully block giant particles, waterproof, anti-fog, moisture-proof, delicate / breathable, non-irritating to the pores and skin, can play a superb 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. Simple to make:appropriate for most individuals，May be sewn with a stapler, handbook or stitching machine. Outer non-woven material and center meltblown material, internal skin-friendly layer, simple to make by hand.