ZAGG today introduced an invisibleSHIELD for the MacBook Air, a clear, thin adhesive film cover designed to protect high-performance electronic devices, such as mobile phones, PDAs, gaming devices and laptops. The precision pre-cut invisibleSHIELD applies directly to the device, providing permanent protection and eliminating the bulk of external case protectors. Its technology was originally used by the military to protect helicopter rotor blades from dust, dirt and debris. invisibleSHIELD for the MacBook Air is priced at US$24.95, $39.95, 54.95, depending upon the coverage.