1. Wide Application : This protection airsoft game gas mask dummy is for airsoft paintball, tactical game, live cs game, BB competition, survival game, cosplay, outdoor party, halloween, costume ball. Not suitable for people wearing framed glasses 2. Design of Double Exhaust Fan : The Exhaust fans of this M50 airsoft gas mask full face in the each side promote the flow of air, blow dry the sweat quickly and prevent lens from forming fog, you the clear and broad vision. 2x AA batteries are not included 3. Normal Size for Most Face : This m50 skull gas mask come with 6 adjustable elastic straps, together with padding on forehead and nose, a better comfortable and secure fit. The elastic adjustable headband ensures that this airsoft gas mask is suitable for most people's face shapes, from teenagers to adults. 4. Breathe Freely Comfortable : The holes in the mouth of this skull game gas mask will allow you to breathe ly and the lens before eyes will allow you to see clearly. The Cheek and forehead pad a cushion and absorption of energy, protect our cheeks and nose from being hurt.