40 pieces per box Approvals: FDA EUA (US) and CE Certified (Europe) 5-ply material Ear loops and nose clip for comfortable fit Product Name: Protective Mask (non-medical) Product Structure: The face mask consists of the mask body, ear loops and the nose clip. The body contacting materials include PP adhesive non-woven fabric, which forms the four heavy filter layers, and elastic string. The main filtering material is electrostatic melt-blown superfine cloth composite ES hot cotton, which is effective in filtering harmful particulates in accordance with national standard KN95 GB2626-2006 levels. Protection Level: N95 Execution Standard: GB2626-2006 Expiration Date: 3 Years (see the packaging indication for production batch number and expiration date).