Zan Headgear, Half Mask, Neoprene, Reverses from Red Slayer to Gray Mask Stretchy neoprene material is warm and water resistant. Mask are Unisexed and adjust to fit Late Teens - Adults. The size is adjusted using the adjustable velcro closure. Vent Holes are provided for the Ears, nose and Mouth. Can be Worn w/ Goggles, glasses, helmets & other headwear.