Abstract: This invention is a tension and freely adjustable protective case for remote control units of electric or electronic products. It's a set of stretchable and contractable protective case that can be extended or reduced in height, width and length to cover the case of any remote control unit, regardless of its sizes and brands, so that the remote control unit would not be damaged by accidental collision (such as the drop to the floor) which may lead to abnormal operation due to mul-functioning of its internal circuitry.