http://www.vargooutdoors.com/ti-arc-backpack.html#.UvoGY2-YYdV

While it looks interesting (it is titanium after all!) and if the price is right I may try it, it has not convinced me to abandon my own explorations in frame building. The 30 pound weight limit is concerning.

As an aside, how does one determine weight capacity/limit? The old army alice packs were rated to 70 pounds but every former infantryman knows one could double that.

My latest ventures have been modified-for-length alice packs. I gave three away and hopefully will get some performance feedback soon..