Valve have released the forth and final video in their "Product Investment Opportunity" trailer series, this time taking a closer look at the Long Fall Boots, a feature from the original Portal that wasn't really explained in that game.
As CEO and founder of Aperture Cave Johnson explains, there've been a few hiccups getting the years-in-production Long Fall Boot out of R&D and onto the assembly line. But now that we're seeing these boots in action, we're convinced that's it's among one of Aperture's safer products.
Watch the video embedded below or click here for the HD option
Portal 2 is due next week on April 21 2011 for PC, Xbox 360 and PlayStation 3.