Had I been another bumper ("Sony Xperia Z3 Compact Case in Anthracite-transparent" by Moodie) ordered for my Z3c. Since I was pretty disappointed: Nearly 2 weeks recesses punched quite inaccurate to delivery and only the pages it were semi-transparent, the back against it completely carbon black box.
After this disappointment, I then ordered the Cruzerlite Bugdroid Circuit Case in green. This is relatively expensive, but the price is worth all the time, when you see the result. The fit is absolutely perfect, the punched exactly where they should be and only 5 days delivery time, and from England.
The highlight is the look. In a white Z3c with this semi-transparent green neon green from Sony looks, cool! This has even noble and not screaming cheesy. The rear view with the Android robot is an eye-catcher and worked very cleanly.
A big plus is that both the side door for the SD card / SIM card as well as the cover for the USB port are covered by the bumper and so the smartphone almost entirely protected. Since I work with a magnetic charging cable and do the data transfer with Bluetooth and / or AirDroid, I do not have anyway to turn the fragile valves.
My conclusion: In spite of not just low price, this bumper is worth every penny.