This Stylish, slim-fitting snap case provides everyday protection and it allows you to simultaneously charge & sync your iPhone and Boostcase. The rechargeable 2700mAh battery sleeve adds 100% recharge for iPhone 6 Plus and easily attaches/detaches from the snap case using a patented locking system. With boostcases patented modular system you can conveniently add more power when you need it and remove it when you dont. Case material plastic. Compatible with Apple iPhone 6.