Spigen AirSkin then once it's available, Caudabe Veil XT.
Yup, that's why I said, "then once it's available...".I love it on my 6S but is not yet available for the 7
Doba87 take a look at dbrand.com skins. They are thick skins that completely cover the iPhone 7 back and sides, perfect for avoiding the extra width.
A little pricey but I am a huge fan of the Apple leather cases. They are thin, look good, and have a better feel than plastic.