All Decomasks are made in the USA from the highest grade polyester and spandex blended fabric, ensuring fit that will conform to any face and never fray. Masks are 10.5" X 4.25". One size fits all because they stretch and conform to your face. Anti-Dust/Odor: Wearing this mask will help protect you from dust, air pollution, and pollen. This product is washable and reusable. Very light and compact. Hand wash is recommended.