The core of both versions of TechStyle-Runner is, like many playthrough iPod and iPhone cases, a hard plastic shell that has been wrapped in softer materials that are supposed to look and feel nicer in your hands. Here, the first layer of wrapping is soft foam, which gives the case a somewhat unusual springy feel, while the second layer is a mix of different types of stitched fabrics. Speck lets you pick from six accent colors?red, yellow, green,?