The ergonomic shape of the bumper is very sleek, light, and of course, beautiful. 
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Despite it's minimalist appearance, the metal bumper is CNC machined from a solid block of aircraft grade aluminum. In other words, it's strong and light (25 grams) A on/off button is designed into the case to complete the clean lines. The finish of the case is anodized to create a hard protective coating in brilliant colors. The inside of the Vapor case is lined with a absorbing material that reduces the G-forces of an impact. It also creates a non-conductive barrier to help maintain the iPhone's antenna signal strength.