Back Button Not Appearing for Multiple Tabbed Pages Workflow

I am having a very difficult time with Ionic tabbed views. I have the following workflow where each of these pages have their own set of tabs.:
Home (user can search) -> Results -> Shopping Cart.

Demo: http://codepen.io/benbabics/collab/MaqGjX/

Everything works thus far, but my issue is that as a user navigates to each new tabbed page, there isn’t a back button to the previous tabbed page.

I want to continue using the tabbed views so I can define the template and controller together in the router. This is a good setup. My issue is that as the user navigates to each page, there isn’t a back button.

PLEASE offer any insight. PLEASE try the demo above, and see what I’m talking about. I’m in need of a solution as I’m up against a deadline this week. Any help is much appreciated. :smile:

Thanks,
Ben