TheĀ replacement headgear for theĀ AirFit F30 Full Face MaskĀ is oneāsizeāfitsāall so everyone gets a fit thatās just right. Made of nylon, elastane, polyurethane, and polyamide, the AirFit F30 Full Face Mask headgear offers a plush, flexible fit that contours to your face and helps reduce pressure points and red marks.