Adjustable Elastic Straps About this Skull Mask,Padding on forehead and nose together with 6 adjustable straps offers a comfortable and secure fit.Design of Exhaust Fan Exhaust fans in the each side promote the flow of air,blow dry the sweat quickly and prevent lens from forming fog,offer you the clear and broad vision.(2x AA batteries are not included).Comfortable Protection Skull Dummy Game Mask,The holes in the mouth will allow you to breathe freely and the lens before eyes will allow you to see clearly.Cheek and forehead pad offer a cushion and absorption of energy,protect our cheeks and nose from being hurt.Wide Application Ideal for Paintball, Tactical game, Live CS game, Airsoft or BB competition, Survival game, Cosplay, Outdoor Party, Halloween, Costume ball.No Anti-Gas Function Just Costume Props. This Paintball Mask has no anti-gas function, it is a game mask.