[95% Polyester/ 5% Spandex Toddler size fit for Kid (39"-47") & Baby size fit for kids (31"-35") Easy fit by belly Drawstring closure & elastic tightening on ankles Updated Powerful Fan - Fully inflates the costume in 30s Battery/Power Bank Charging can last over 30000 hrs Easy to carry. Easy set up. Easy to walk jump sit rundance. Great fun. Include: inflatable Costume Fan Battery box and detailed user manual. (Requires 4 AA batteries or Power Bank not included)]