Here is Yin's latest invention, a small baseball air pump, with a with 3 settings: The "L" or low setting grows the user 1 FT per squeeze/pump, the "M" or medium setting grows the user 5 FT per squeeze/pump, and the "H" high setting grows the user a wopping 10 FT per squeeze/pump. And here's the best part, the pump grows with the user. The pump is made of a special nano-material, so that you won't have to worry about the pump becoming too small for you to use. Hope you all like it. For more questions on how the device works, please ask the manufacturer. Thank you! ^^