Kleenex Anti-Viral Tissues kill 99.9% of cold & flu viruses, helping you to take care of you & your family during cold & flu season. Made with 3 soft plies, including a moisture-activated middle layer that kills 99.9% of cold & flu viruses in the tissue within 15 minutes. Virucidal against: Rhinoviruses Type 1A & 2 (Rhinoviruses are the leading cause of the common cold), Influenza A & Influenza B (causes of the flu), Respiratory Syncytial Virus (RSV the leading cause of lower respiratory infection in children). Tissue Type: Facial; Number of Plies: 3; Number of Sheets: 55 / Box; Length: 5".