DIY material: This product consists of three layers, the outer layer is a waterproof non-woven fabric, the middle layer is a meltblown cloth, and the inner layer is a skin-friendly layer, including elastic ear lines and a bridge of the nose?? You can do it yourself. Melt-blown cloth: High-quality melt-blown cloth has strong barrier properties, good adsorption effect, and can effectively filter particles, dust and dirt??Convenient and hygienic. Outer non-woven fabric: high density waterproof, can effectively block large particles, waterproof, anti-fog, moisture-proof, soft / breathable, non-irritating to the skin, can play a good waterproof effect. Skin-friendly layer: the inner skin-friendly layer, the surface is evenly dense with pores, breathable and comfortable, no burr, making you more comfortable to wear, healthy and no odor. Easy to make:suitable for most people??Can be sewn with a stapler, manual or sewing machine. Outer non-woven fabric and middle meltblown fabric, inner skin-friendly layer, easy to make by hand.