Welcome to the future of phone protection. With the Juice Pack Air by Mophie, you can double your iPhone 55s's life battery expectancy, eliminating that annoying power down half way through a busy day. When you charge your phone with the case on, you'll be automatically charging your case as well. Lighter than any previous Air, this model maintains a sleek appearance and comfortable feel that's also able to withstand the regular wear and tear of daily life. More power, more luxury, more protection: what's not to like'