The new Wrangler is a unique slider made from a handful of separate pieces. Its main components are a hard polycarbonate sled into which the iPhone 5 slides, covering its front, edges, and upper back, plus a replaceable backplate. Inserting the device is somewhat difficult due to Ivyskin’s use of detachable rubber Sleep/Wake and volume button covers. They tend to fall out of place whenever the iPhone is removed, and can be lost if you’re…