A light-weight, elongate plastic bag having a first end and a second end is provided for transferring air into inflatable items. One end of said elongate flexible bag has an opening, while the opposite end of said elongate flexible bag has a nozzle or other similar fitting. Additionally, an optional check valve can be provided on said nozzle. Air or other gas can be easily introduced into said elongate bag at low pressure and, thereafter, transferred at a relatively higher pressure into an inflatable item to be filled.