Bullkllr, Danner have anumber of boots with the air bob sole. I have this in my newest pait of Canadians and best sole I have used thus far.

I am not sure what your looking for boot make up (insulation, material, height, etc). But the following Danner's usethe air bob sole. Info isfrom the 05 hunting catalogue;
Grouse (uninsulated),Raptor & Seirra (200 grams), Hawk &Santiam (400 grams), Trophy & Canadian (600 grams).

They weigh anywhere from 3.75lbs to5lbs, though!