These are our fully adjustable face masks with 2 layers of fabric for men. They are ideal for long-lasting wear thanks to the attachment system at the back of the head. They are equipped with a pocket allowing the insertion of a filter (not included). Elastics allow a suitable fit for head circumferences between 21.5 inches and 25 inches (55 to 64 cm). *For hygienic reasons, no mask can be exchanged or refunded. 100% polyester fabrics certified OEKO-TEX® 100.