Caipi Ponytail Hair Extension by Ellen Wille is a beautiful medium length clip in ponytail with tons of fullness. This curly pony is lightweight, fun, and designed with a small 2.5" claw clip that is easy to attach. Caipi will take your skinny pony to simply stunning in no time. This European designed ponytail extension from Ellen Wille is affordable, lightweight and easy to attach.