Product Features: 1. Disposable, single-use, breathable, light, and environment-friendly; 2. High elasticity ear loop help fit different users and dual point attachment helps provide a secure seal; 3. Adjustable nose piece for extra comfort; 4. At least 94% filtration efficiency against certain non-oil particles. Points for Attention: 1. This product is prohibited to be used with the damaged package; 2. Do not use in atmospheres containing less than 19.5% oxygen, as this respirator does not supply oxygen; Not for use in oil mist atmospheres; 3. If the product becomes damaged, soiled, or breathing becomes difficult, leave the contaminated area immediately and replace the product; 4. This product should be stored in a clean, dry, and ventilated environment with a relative humidity of less than 80% and without harmful gas.