Link: http://blog.testfreaks.com/review/review-of-moncarbone-hovercoat-plus-case-for-iphone-55s/
Quote:
"One of my all-time favorite iPhone 4 cases was the HoverCoat from monCarbone. Its carbon fiber material made it light as a feather yet durable with steel like strength. With the release of the iPhone 5 and now iPhone 5S, monCarbone has introduced the HoverCoat Plus. This improved version adds Basalt fiber along with carbon fiber to enhance both signal reception and to boost durability."