Is it just the photo that makes it appear there are two cases?
Is the battery in the same case with the phone?
The iPhone slides into a slot on the Morphie case and the iPhone connects into a lightning connection attatched to the Morphie case and finally the top part of the morphie case connects to create a seamless seal. Yes the iPhone is a little bit thicker in appearance because the morphie case is not just a case but a case that has a battery in it. However in my opinion the case is not that thick looking and my iPhone has a long lasting battery life because of the reserve battery charge. The reserve battery is activated by a button on the back of the case it's self. I strongly recommend this case to anyone who uses their phone through the day!