[LED Halloween Mask]: The EL cold light color on the purge mask makes you more attractive and unique among the crowds. Its a good choice to add Halloween atmosphere. [3 Scary Flash Modes]: Two AA batteries are needed to connect the buckle. Press the button that controls 5 flash modes: constant on, slow flicker, fast flicker. (The batteries are not included in the package.) [Premium Material]: Made of environmental PVC and EL cold light, this scary light up mask is quite friendly to your eyes and face. No UV damage, no pungent smell, no negative effects on your body. Its quite safe to wear. [Comfortable Wearing]: The design of sponge cushion on the inner forehead makes you more comfortable Unbranded wearing. This LED Halloween mask works basically without temperature, there will be no heating phenomenon. Besides, it also has good shock resistance and will not be dark due to any external impact. [One Size Fits Most]: 8.2 inches in length and 9 inches in width make it fit most faces. An adjustable strap is also designed on this purge mask. It fits most heads.