iSkin (http://www.iskin.com) has released solo and revo4 cases for the iPhone 4. What’s more, the new iSkin solo will be initially offered online for US$14.99 — 50% off the suggested retail price until Aug. 31.

The iSkin solo’s design combines a glossy translucent back, matt finished sides and highlighted button accents. It’s made from a “phthalate-free” polymer and is available in five shades: Carbon (black), Quartz (clear), Breeze (light blue), Vive (purple) and Cosmo (pink). 

The iSkin revo4 delivers full body protection against moisture, shock and impact. Integrated headphone jack and charging port covers are designed to seal and guard the ports from moisture and particles. All buttons are securely covered, while maintaining full functionality and sensitivity. The revo4 also features the hard-plastic Visor that snaps over the iPhone’s screen, protecting it against impact and hazardous environments.

The revo4 is made with premium hypoallergenic silicone that’s free of lead, phthalate and BPA’s. It costs $39.99 and is available in four color combinations: Nighthawk (black/brown), Falcon (brown/white), Lush (pink/black) and Hornet (yellow/black).