【Product Size】Deluxe version of inflatable T Rex costume. Kids size. 【Children fit 0.8-1.2 meters】【Teenagers fit 1.2-1.5 meters】【Adults fit 1.5-1.9 meters】【Product Components】Package includes instruction sheet, inflatable T Rex costume, hat, and air pump. The air pump requires a portable power bank or 4 AA batteries. (Batteries not included) 【Excellent Craftsmanship】The T Rex costumes for Halloween are made of high-strength waterproof polyester that is resistant to tears and cracks, the excellent stitching improves the quality of the inflatable costumes. In addition, our costumes are equipped with a powerful fan for continuous airflow to inflate the costumes. 【Installation & 【Precautions】The costume set is powered by 4 AA batteries with the fan, place the battery pack in the designated pocket. Otherwise, it may overheat and cause accidents. Turn on the power to the battery pack and inflate it, the dinosaur costume will be inflatable in seconds. To seal the gas and maintain the costume's shape, the costume's material is not breathable. If you wear the costume for an extended period, along with your own sweating, it may cause a feeling of dampness inside the costume. If there is such a damp feeling, it is recommended that you take off the costume in the middle and keep the costume and your body dry. Then you can continue to wear the costume after a few minutes. For optimal performance, make sure to use 4 brand new and high-performance AA batteries. Our costumes are equipped with high-performance fans to improve inflation immediately, which leads to increased battery consumption, we strongly recommend that you invest in durable batteries if you use the costume for more than an hour at a time. It is also advisable to have extra batteries on hand for replacement to extend use.[CO]