This 4.3 oz., 40/30/30 recycled RPET polyester/recycled cotton/cotton is not only flexible and soft, it also helps to fund local rescued animals! Feel good in our eco performance fabric that is 2-ply, moisture-wicking, with self-fabric binding and ear loops, is breathable, washable/ reusable, sustainable, and eco-friendly. Each mask is made from approximately 1 recycled poly (RPET) water bottle, so you're helping mother nature too! Non-medical grade. Fits over an N95 mask. Protect yourself and help out cute animals...go you!