The biggest advantage of thin cases is that they don't add any extra bulk to your phone and keep the real profile of device intact. (indabaa.com)
As the name suggests, the transparent case lets you show off the design of your phone, and the ultra thin case barely adds any bulk or thickness to the device. (androidauthority.com)
Here's a closer look how thin the «naked» S6 will be, as compared to an S6 with a relatively thin case on it. (heavy.com)