To be fair, you don’t have to own a MacBook Air in order to purchase Iomega’s eGo Helium portable hard drive. It is, however, “a perfect match for the new MacBook Air notebook” according to Iomega. It’s even pre-formatted to the HFS+ file system.

The drive itself has 320GB of storage space, weighs less than half a pound, and requires no external power supply. You’ll also get some software included: EMC Retrospect and MozyHome (2GB version), although you’ll have to download it. Oh, and you can get 2GB of Mozy service for free no matter who you are. So not a huge deal there. You’ll get a license for the EMC software, though, which is nice.

It’ll be available in October with an MSRP of $149.99, although it’s currently listed at $142.49 on Iomega’s site (not in stock yet, of course).