Evutec Wood S Series Sleek Impact Protection Snap Case for The iPhone 6+ Plus in Ebony &ndash; Wood Grain Brown/Black Contains DuPont Kevlar fibers (same materials that are used in bullet proof vest to absorb the impact) Our karbon SI wood cases are designed without any metal substances or components, allowing you to use your iPhone 6 Very durable for such a slim case 0.9 mm thin - 5x stronger then steel and lighter- scratch resistant coating Each wood S series case is treated and polished with our specially formulated, five-layered, evutouch coating