From Wired:

“If you’ve spent years customizing your own idiosyncratic carry system, complete with handsewn straps and just the right pouches for all your gear, then you will be thrilled by the GR1. Its slim profile in no way betrays its awesome carrying capacity, which is bolstered by a hefty amount of MOLLE webbing to accommodate any sorts of straps, carabiners, or other items that you might choose to clip onto the interior or exterior. And since it’s designed by an ex-member of the Special Forces, it is tough enough to take whatever man or nature can think to dish out.” 

Read more here.