100% Polyester, OSFM: 8 5/8” W x 5 3/4” H, Non-Medical Grade & Non-Surgical. Not certified Personal Protective Equipment (PPE).All sales final. No returns. No refunds.. Antibacterial; Water Repellent; Moisture Wicking; Washable & Reusable; Double layer protection; Soft & Comfortable; Bendable strip for nose; Adjustable Silicone knob w/elastic ear loops