Marware has introduced its new Sports Grip Extreme case for the fourth-generation iPod nano. Made from high-grade antimicrobial silicone, the case features a dual color design on the back, with textured sides, open access to all ports and controls, and an included screen protector and cleaning cloth. Available for pre-order in black/red, white/gray and pink/white, the Sport Grip Extreme for iPod nano 4G sells for $20; a release date has…
