Hi,
I got to know about a wholesale clothing site from my friends, name Oasis Sublimation. They are the reputed manufacturer of wholesale sublimated clothing. My friends had bought custom sublimated leggings at wholesale rate from them for their own clothing stores. They also told me that their quality of products were too good. You can contact with them if you are interested about customizable wholesale leggings.
Website address:- http://www.oasissublimation.com/