ZTE Whirl (Z660G) Case, MPERO SNAPZ Series Rubberized Case for ZTE Whirl Z660G - Black Coated with a rubberized finish for extra grip and a smooth touch. Made from high quality polycarbonate materials for durable protection. Precisely engineered two-piece design for easy install and secure snap installation. Full access to all device features due to precise button and port cutouts. Minimal bulk added and very lightweight.