The mask is made of premium PVC and El cold light wire, which has no UV damage, no adverse effects on the human body. Environmental and non-toxic. Padded mask suitable for most adult and child faces. Comfortable and breathable. ONE SIZE FITS EVERYONE Designed with an adjustable strap, the LED light mask fits all faces, also compatible with goggles. The LED light mask comes with an inner forehead foam for cushioning. Clip the power pack to your pocket or clothing. Takes 2* AA batteries (not included). The mask can be used any occasional such as party, wild parties, discos, clubs, Halloween, birthdays, Christmas, Easter, New Year's Eve Party. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.