The iSkin Revo has a superior silicone material with an embedded antimicrobial agent (Microban) that protects your iPhone, inhibiting the growth of microbes. And 'designed to complement the iPhone without additional bulk, and features a duotone design with sophisticated color accents complementing the color of the main body. Designed with useful, well thought out features, the Revo is the most comprehensive choice for keeping your iPhone safe. Made with the finest materials, the Revo covers all vulnerable surfaces, ports and controls giving you peace of mind you expect from an iSkin protector. The Revo also helps protect against shock and surface damage caused by accidental falls. The Revo has a touch-compatible privacy film that helps to keep prying eyes of personal information. When you look at it directly, the privacy film gives you a clear view of the screen. Angle of view are stained, almost entirely black, to create an effective privacy barrier.The film easily adheres to the privacy Revo iPhone screen without the use of adhesives. It allows your fingers to slide freely, offering a touch and a screen protector. Creating a durable polycarbonate, specially coated with an optical clear-coat anti-scratch visor helps keep the iPhone Revo ever so important screen safe from objects impact. The visor is easily attached to the front to cover and protect the iPhone screen and can easily be hung on the back, in perfect harmony. Revo-resistant silicone exterior features a subtle texture which increases grip on the iPhone and prevents sliding when placed on an inclined surface. It 'also anti-dust coating to prevent dust and lint ..
iSkinSilicone Protector for iPhone 1G (Bistre Brown Crimson Red Accent)
Review by Masroe : Best 1st generation iPhone case 
The aluminum iPhone is just to slick in my hands. I always felt like I would drop it. This case solved the problem without adding too much bulk. I don't always use the clear cover, but it's nice to have and clips to the backside of the case when not needed to protect the screen.
rCons - the camera protector is plastic and scratched pretty quick. But it pops out with a little work. So, I tossed it. I wish the case was available with a green accent.