in·flat·a·ble 
(ĭn-flātə-bəl)
(ĭn-flātə-bəl)adj.
Designed to be filled with air or gas before or during use: an inflatable mattress.
n.
An object or device that can be filled with air or gas, especially:
a. A small rubber boat or raft filled with air.
b. A large helium or hot-air balloon constructed so as to resemble a figure or object when inflated.