These face masks are made using 2 layers polycotton with a pocket on the inside to add your own filter. The elastic is adjustable and there is a wire nose piece to ensure a good fit.
They come in 3 sizes and due to the nature of them they are none returnable, so please make sure you double check sizes.
To measure- place the end of the tape measure between your eyes and measure straight down to the point of your chin, if you are between sizes we would recommend you go for the size up.
Extra Large-6.2" (16cm)