A surgical mask or re-usable fabric mask is intended to prevent infections by catching bacteria shed in liquid droplets and aerosols from the wearer's mouth and nose. A surgical mask is disposable and generally should be replaced everyday, depending on usage. A re-usable mask is effective for recurring use if washed regularly in hot water. Please note that due to necessary Health & Safety precautions, all PPE products including these 3 Ply masks are final sale. Non Refundable. We recommend checking with your workplace or school regarding guidance on if specific types of masks are required. If ‘daily preventative use’ is the goal, experts recommend a surgical or re-usable mask. Our re-usable mask is 100% cotton and available in mens, ladies and kids sizing for easy use, while surgical and KN95 masks come in one size and may need to be resized manually. For more information on masks, you can also consult authorities like the World Health Organization (https://www.who.int/emergencies/diseases/novel-coronavirus-2019/advice-for-public/when-and-how-to-use-masks) Delivery: 2 to 5 days.