100% Polyester Set of 6 as pictured ONE SIZE FITS MOST - Size 9.4"x17.32 features a lightweight & breathable 4-way stretch fabric that fits men, women, and kids. Fold it to create 2 layers for added protection and more snug fit. LIGHTWEIGHT & BREATHABLE - The cloth face mask's moisture wicking fabric transfers sweat away from your body, cooling you down. The quick dry fabric technology lets your mask bandana dry in minutes. Our soft & breathable fabric can be worn comfortably for hours.