Features: 1. Mask replacement gasket provides comfortable protection for people. 2. It is recommended to replace it once every 2 hours, and no more than 4 hours for a single piece, for best results. 3. Disposable mask gasket can effectively extend the number of days of mask use, more effective isolation and protection. * Mask replacement gaskets provide comfortable protection for people. Keep the inside of the mask clean, extend the use time of the mask, and breathe comfortably. * Disposable mask gaskets can effectively extend the use of masks, replace mask gaskets every 2-3 hours, and extend the use of masks by 3-4 days. * More effective isolation and protection, electrostatic adsorption of particles, multi-effect isolation and protection for peace of mind, spunlace non-woven nonwovens. * Adhesive-free pollution is avoided, and it can be used directly after being placed. The friction adsorption is not displaced, and it is more dust-proof and more sanitary. * Use occasions: hospitals, outdoor, construction sites, travel, cold, operating workshops, farms and other occasions to protect your health during an epidemic. Product parameters: Category: Mask Gasket Material: Non-woven Shelf life: 3 years Size: 8.8 * 11.8cm Function: filtering Using methods: 1.After washing hands,take out the product. 2.Place the mask pad in the mask to prevent slipping. 3.Install the mask pad, fit the face and wear the mask correctly. Package:(without mask) 1 pack (100 pcs) /2 pack (200 pcs)/4 pack (400 pcs) x mask gasket Thank you for coming and wish you a nice day.