personalizable 

an item or idea that can be edited or altered to fit a personal preference.

"MySpace is much more personalizable than Facebook - my page isn't just blue and white!"
"That Mad Lib was so personalizable... I didn't know Britney Spears cleaned her teeth with a toilet bowl."

personalizable by Tayla Rylee March 14, 2008

personalizable 

something that is able to be personalized.

the ice cream at culvers is more "personalizable" than the ice cream at dairy queen.

personalizable by usmc1017 October 9, 2011

Personalizeable 

To be able to personalize something.

In this game your character is personalizeable.

Personalizeable by Jeff Ism December 28, 2006