a water - resistant cover consisting of three components : a soft , form - fitting shell , a plastic slider and a plastic end cap . the shell does not inhibit the functionality of peripheral controls and includes fully integrated polycarbonate windows that are thermally and mechanically bonded to the shell in the molding process , the windows being adapted to the specific contour and profile of the device and to protect the device &# 39 ; s screen while not inhibiting the functionality of a touch - screen , keypad or acoustic devices . the slider is slidably connected to the cover for closing the audio jack aperture in the shell with a double closure to maintain a water - resistant seal when not in use . the end cap closes the cover with reciprocal seals that are molded into both components and the cap is easily removed for access to a data port or charger and is enhanced with water - resistant acoustic vents that provide sound clarity to speakers or microphones .