The polarizing filters slide-on to the iPhone or iPad.  Price is for one iPhone or one iPad Slide-On Filter. These slide-on filters convert a personal iDevice into a temporary testing station.  Optionally, we supply polrizing filtes that adhere to the screen and is best used for iDevices designated to tesing and not personal use.  See Adhesive Polarizing Filters.

Sceen Polarizing Filters for iPhone and iPad