Product Inflates with battery-operated fan Requires 4 AA batteries (not included) Installation instructions: 1: Use a screwdriver to unscrew the screw in the battery pack, put in 4 AA batteries in battery pack, then fix the cover . 2: unscrew outer fan ring counterclockwise ,screw outer fan ring back into place to secure fan to costume ( usually, the fan is installed in costume, you can pass this step ). 3: plug in power cord from battery-pack to fan. 4:step into costume and clip battery pack to your own clothing. Move battery-pack switch to ON position. It wil take about some minutes for air inflating. with our strong power blower fan, you dont need to wait too long . 5: Finishing! Inflatable costume has been inflated enough, you can walk now. CONGRATULATIONS! You're ready to rock the best costume of the year at your next event, you're going to be what everyone is talking about and be the life of the party. Notice: Battery operated fan inflates costume in seconds, please do not put it in a pocket for a long time to prevent the equipment from overheating to burn the leg. PREMIUM MATERIALS AND BEST DESIGN The Halloween costume is made with 100% polyester that is strong and durable so that you will never have to worry about any tears or holes. We carefully check each product before shipping to make sure that it's flawless so you can receive it in top condition. SUITABLE FOR ANY SCENE Suitable for parks, zoos, outdoor activities, company celebrations or conferences, bars, clubs, TV shows, carnivals, opening ceremonies, weddings, Halloween, Christmas, festivals, birthday parties, bachelor parties, Cos parties. You will be the winner of every Costume competition, attracting everyone's attention!