Product ManualColor Brown,Yellow,Blue,Red,Green,Grey,Purple and Skeleton T-Rex follow Method I as below.Color Upgrade Brown please follow Method IIMethod I: Simple using method and fantastic look.The dinosaur costume with battery 2fan blower,requires 4 x AA Batteries for each or you can use the USB Wire connected by power bank to keep it inflate for long time.It has many magic on it.Method II: This is the Upgrade Version.Please read the manual and follow it to operate to make sure the correct using. 1).Take out the inflatable model support and push the hand air pump until it is filled with 30% air(about 220times),Attention: 30% air. 2).Unfold your dinosaur costume and inflatable model support on floor, make sure the model support will be put correct place of dinosaur costume.Please attention the inflatable mouth should be at the dinosaur costume abdomen,then make sure the left foot and right foot correspond with costume’s left foot and right foot. 3).Put the model support’s legs and tail into the dinosaur costume’s legs and tails correctly.meanwhile please make sure the blue color part is out of costume’s foot.please do not forgot to fill the fan blower to the dinosaur costume 4).Pull on the costume zipper leave the inflatable mouth ,then go ahead to push the hand air pump until the model is filled with enough air to support the costume.Please adjust th correct place between the model support and costume during inflation,easpecially the legs and tail. 5).After finished the inflatable model support, please turn on the costume fan blower. There are 3 methods to operate the fan blower. A. 2 Fan Blower operated with battery,requires 4 X AA Batteries(not included) for each fan blower. operated with USB Wire which connected by power bank(not included). C. 2 Fan Blower operated with power plug,which plug to socket can keep costume inflated for whole day.