Twelve South sent us a couple of BackPacks to try out, and in following TUAW's policy for review equipment, we're going to be giving those away to two lucky readers. Before we get to the details of the giveaway, be sure to read the review of this surprisingly handy little accessory.
Back when we ran the first post about the BackPack, I noted that the device doesn't use any clamps to grab onto the metal arm of your iMac or Cinema Display, using friction and gravity instead. One reader insisted that there had to be clamps of some sort, but Andrew from Twelve South quickly corrected her with this statement:
Just wanted to clarify the 'friction and gravity' thing. It is accurate. Nothing screws into the iMac stand. There are two clips that you adjust in width and then tighten onto the BackPack shelf. The shelf and clips then hold onto the iMac stand with gravity - because the stand is trapezoidal (smaller at the top - larger at the bottom). It simply slides down to the width you have set. That's also what makes it adjustable - you just change the width. Hope this helps.