This Adult Face Mask has a 93.6% PFE (Particle Filtration Efficiency). This mask is reusable, eco-friendly, and sustainable 2-ply mask made of 70% recycled material. Lightweight, breathable, and super-soft comfort fit for all day wear. Each mask is made using RPET poly from recycled water bottles. Moisture wicking fabrication is washable and breathable. Features a double layer fabric, goes over your ears for secure fit, fits over an N95 mask. One size fits most.