Light up Purge Mask LED Jason Mask Scary Halloween Mask for Adults Men Women Halloween Festival PartySpecial design combine purge mask and jason mask,attracts your friends at first eye3 light modes: constant on, slow flashing, fast flashing, add a cool effectSize: 9.5 * 7.5 inches. One size fits most, back band is elastic and can be adjustedPerfect for halloween, cosplay, carnival party, light show, horror house and other festivals and eventsLight up mask requires 2 AA batteries (batteries not included). The battery pack can be easily clipped to belts, pockets, etc