The Batman Dark Knight Joker Clown Mask is a half mask with an attached elastic string, and this one was made just for you! One size fits most adults. Includes: Mask. This is an officially licensed Batman product. Halloween is an annual holiday that falls each year on October 31st. This celebration dates back over 2,000 years and is also referred to as All Hallows Eve. Legend has it that wearing masks originated from Ancient Celts and they would wear these masks in hopes that the ghosts that wander around the countryside on Halloween night would not recognize them as being human. Our online Halloween shop,Toysrus.com/Halloween, is the destination for an expanded collection of silly, cute and ghoulish garments. Our online shop will help kids decide what they"ll transform into this Halloween. Before trick-or-treaters head out into the night, it is important to make sure they are as safe as they are sensationally dressed. Our assortment of Halloween safety products, from light-up lanterns, headbands and candy buckets to flashlights and glow jewelry, will help kids "Be Safe. Be Seen. Be Spooky!" on the most frightful day of the year! Get ready for some fun-filled spooky Halloween fun this year!