The iSkin Revo2 is a silicone case that protects your iPhone 3G from everyday exposure to dust, moisture, and dirt. There Revo2 also provides two ways to protect the touch screen via a clear touch film and a visor. The iSkin Revo2 is available in four colors (Diablo, Sonic, Ozone, or Onyx) and costs $39.99 each.