If you feel that the 8 AA batteries of the inflatable costume do not last long enough. Then please try this 12V power supply which will increase the usage time by at least 5 times.
Rechargeable 12V 6000mAh/5V 12000mAh DC output lithium-ion battery pack, suitable for inflatable clothing, fans, mobile phone charging, LED lights, portable lithium-ion power bank with charger, black