I believe this is new. Please correct me if I'm mistaken. I've been to the site many times and never noticed the Ultralights tab.

http://www.kifaru.net/KU.html

I don't work for them. I've never carried a Kifaru pack (never cared for how the Mountainsmiths fit me). Price notwithstanding. Just thought it was interesting* that this company was offering ultralight packs. Another option for us is all.

*interesting is not code for anything.

Look at the KU3700. I like the beefy belt. Obviously with the hunter in mind when mentioning 100LB loads are possible.