Silicone cases are great. They provide a slight layer of cushioning and lessen the chance of your smartphone or PDA slipping out of your hand and crashing to the floor. Unfortunately, while silicone cases add little thickness to your gadget's form factor, the addition is enough to make a bulge that gives off the wrong impression.

Seidio's Super Slim Rubberized Case designed for the Treo 680 could be different, since it's advertised as being only 1.2mm thick, which is slightly thinner than the other rubberized sheaths I've seen. On top of that, the black color rants the Treo 680 a certain distinctiveness. And of course, there are cut-outs for the keyboard, SD card slot, speaker and camera, and the display itself.

Your Treo won't become a tank, but the Slim Rubberized Case is a great balance between durability and keeping your gadget thin. MyTreo.net sells the case for $29.