http://www.rei.com/product/844660/rei-flash-45-pack
REI recently rolled out its new mid-capacity pack, the Flash 45. The medium has a 45L capacity at just 34 ounces, while the large has a 50L capacity at 36 ounces. I get the impression it was based on Ospreys Exos 46, both in terms of specs and looks.
Anyone gotten their hands on one or know anything more about it? Suitable for a thru hike?