READY STOCKDuckbill 5D，3D facemask 4layer mask 50pcs mask adult

New 4D 4-Layers KN95 Duckbill Design 5D KN95 Duckbill Face Mask - 10 Pcs Per Pack 3D is 4layer 4D is 4layer 5D is 5layer [Scope of application] This mask is used in daily life to prevent people from wearing it in the air PM2.5 is inhaled to block fine particles, pollen, bacteria and droplets in the air Equipment that contaminates the mouth and nose of the wearer. Made by : Non-Woven, Nose Piece, Melt-blown, filter cotton Storage Temperature : Temperature 0-40°C, PH≤60% [Storage Method] Mask shall be stored in a clean, ventilated and dry warehouse. [Usage] 1. Hold the ear band with both hands, so that the nose clip is above the mask. 2. Use the mask to counter hold the chin. 3. Pull the two ear belt behind the ear. 4. Press the nose clip with both hands until it fits the shape of the bridge of the nose.