Glowing EL Wire is woven into the mask, made of durable PVC, has no UV harm, NO adverse effects on the human body | Cold light to be 2 * AA batteries(not inculd), Long life: 10000 hours | Comfortable: soft light ,it is el light not so strong as led light so the light did not flicker, will not make the eyes produce tension, fatigue.it have adjust elastic tape can use for for Adult and kids | Perfect for Halloween, Costume Parties, Masquerades, Mardi Gras, Rave Festivals, Carnivals, Gifts, and more. | Three months of after-sales protection: If there are any quality problems within three months after purchasing the product, please do not hesitate to contact us, we will try our best to deal with any problems with the product.