The Granite Gear Virga 2 is unique in that it is an absolutely frameless pack - the only model in our review of this kind. Weighing in at 18.6 ounces, it is also the lightest pack we tested. In the not distant past, many ultralight backpackers carried a simple closed cell foam sleeping pad as part of their hiking/sleeping system. Placed inside the Virga 2 to form a barrel-like frame, a foam pad is key to loading this pack as intended. The Therm-a-Rest Ridge Rest SOLite is the perfect complement.Most ultralight backpackers prefer the comfort an inflatable sleeping pad delivers, and many prefer a pack with a tensioned or straightforward frame. All of our awarding winning packs carry medium loads more comfortably than the Virga 2. That said, we still have a few friends that prefer a frameless pack with a rolled pad inside as the "frame." If you're in this group, the Virga 2 is an excellent and affordable choice.
The Granite Gear Virga 26 is the same pack design at about half the volume.