Energi Sliding Power Case / for iPhone 5/5sThe ENERGI Power Case for the iPhone 5/5s is a sleek protective case with a built‎-in battery‎,‎ which doubles your standard battery life‎.‎ ENERGI is superior in design‎,‎ material‎,‎ quality and construction‎.‎The ENERGI Power Case is real world tested‎.‎ So thin‎,‎ it‎'‎s hard to believe it packs an additional 9 hours of talk time‎.‎ It adds only add 9mm to the thickness of an iPhone‎.‎ We include 2 slim‎-line cases‎;‎ 1 black‎,‎ 1 colored ‎(‎available in Lime‎,‎ Red and Blue‎)‎‎,‎ which slides out of the charging sleeve so your phone remains protected when you don‎'‎t need the extra charge‎.‎ Once your phone is charged‎,‎ simply remove the exterior charging sleeve to reveal a slim‎-line inner case for traveling light‎.‎