Rokform (http://www.rokform.com) has released the US$79 Rokbed Fuzion Aluminum/Polycarbonate iPhone 4/4S.

It’s CNC machined from 6061 T-6 aircraft grade aluminum and injection molded polycarbonate. The polycarbonate lower portion snaps in and out of the aluminum, but fits snug enough for a safe and secure protective fit, according to Jeff Whitten, vice president of Rokform.

The new case is available in a variety of anodized colors, including Gun Metal, Matte Black and Night Cameo . It has a provision for an optional included lanyard.