The TPU Cover is only 0.4mm thick, but offers excellent both back and side protection. The transparent cover allows you and others to appreciate the cool, clean design of your phone while keeping it slim and lightweight. It is made of strong, thermoplastic polyurethane (TPU), which makes the cover comfortable to hold and still allows access to all buttons and ports such as charging port, cameras etc. As always, the Essentials collection has been built with style, quality and protection in mind.