These non-medical, reusable, unisex masks are made using upcycled cotton fabrics, with super soft dual head straps and a contoured shape for a comfortable fit. Side opening for adding disposable filters (optional). Each pack comes with four masks in assorted colors and four antibacterial meltblown poly filters. A portion of all sales is donated to environmental charities each month. Hand wash cold, lay flat to dry. Do not bleach. Low iron if needed. For health & safety reasons, these are final sale and cannot be returned or exchanged.