> How to use1. Make sure that the surface that touches the respiratory tract is not contaminated.2. The mask is attached to the face to cover the nose and chin, and rubber bands are hung on both sides of the ear to secure it.3. 3. Press down the finger so that the nose at the top of the mask can be fully attached.4. Cover the entire mask with both hands and adjust it to adhere to the face while checking for air leaks.Material ingredients, sizeProduct name: Yellow dust prevention mask (KF94) (large) (white, black, beige, coral, light gray, dark gray)Manufacturer: Blue Sky Co., LtdAddress: 82, Ongjeong-ro 17beon-gil, Tongjin-eup, Gimpo-si, Gyeonggi-doMask component information: nonwoven fabric (surface, lining, support, filter),polypropylene coated ce),Nylon polyurethane strap (string)Packaging quantity: 25 sheetsStorage method: Airtight container, room temperature storage (1â30°C)Product Expiration Date: 36 months from the date of manufacture URL: cysky.krCountry of Manufacture: KoreaKey Product Settings Famous ListKF94 3D Mask Premium Domestic High-Quality Quadruple StructureWater uses the highest-quality, high-efficiency MB filter to protect against harmful substances and blocks dust such as pollen, yellow dust, fine dust, and droplets.Based on ergonomics, three-dimensional 3D structure design and air compartment are created to maintain space around the mouth with a safe mask that is easy to breathe and promises long-term comfort.Low-stimulation soft linings minimize skin trouble and cut more than 94% of the average particle size of 0.4μm with four protective layers, including a high-quality Mb (melt blow) filter.It is used in various situations such as commuting, commuting, gardening, outing, car driving, sports, and outdoor activities to help protect daily life and is effective as a pollen control mask.Hygienic and easy to carry in individual packaging.Product production of productsquadruple structureHigh-efficiency, high-density filters that protect the respiratory tract from particulate harmful substances such as yellow dust and fine dust and infectious sources3D 3D Structural DesignWhen worn in a triple fold, it covers depending on the shape of the face, so you can breathe comfortablyFunctional nose supportIt won't run down even if you wear it for a long time and prevents steaming on your glassesEarbandFlexible soft earbands make it easy to wear for a long timeUse of Korean ingredients100% made in KoreaInner Layer - Soft Sponge BondSkin hypoallergenic fabric enhances the wearability.Meltbloom Filter - an ultra-static filter combined with ultra-fine fibers that blocks more than 94% of the average particle size of 0.4 mm hazardous substances.Medium Layer - High Quality SpongeBondIt filters out dust from the air.