PocketBook Shell 7,8" (Black) The refined and practical covers of the Shell series are also available for PocketBook InkPad 3 with a 7,8-inch screen diagonal. The device is tightly fixed inside the plastic bumper case, while the front cover ensures the safety of the screen. The built-in magnets prevent an accidental opening of the case. Shell covers are made using high-quality, durable and pleasant-to-touch leather imitation.They are available in three colours – black, blue and violet. The PocketBook Shell 7,8” covers support the intelligent sleep function which helps to significantly save battery charge.