Initially offered at an attractive price of $15, iSkin's Solo for iPhone 4 ($30) is the company's entry into the increasingly popular TPU case category -- a material that offers the softness of rubber with the transparency of hard plastic. Solo features a glossy, translucent rear surface in your choice of five colors, with matte-finished top, bottom, and side surfaces for additional grip. Each case has integrated glossy flush button covers, super-small…
