This is by far the most unique shoe that I have every purchased, and not entirely what I expected. The shoe is made up of two separate, removable, parts. The outside shell is the leather upper and latex sole. The latex is about 1/8" thick, and offers no cushioning. It is completely water proof, and weighs nothing. The honeycomb pattern acts essentially as tiny suction cups, and the traction is amazing. The leather took roughly 30 miles of walking to break in, but that is very reasonable for leather shoes. I have bony feet in general.
The second part of the shoe is the insert, arround an inch at the thickest part. It again weighs nothing, and provides all of the cushioning. Theoretically you could replace the shoe insert with another patagonia one, or a similar product. I work in a cement construction building where all of the flours are poured concrete. The shoes feel much better than work boots or dress shoes.
These shoes are more comfortable than any other dress shoes/work shoes that I own, but not as comfortable as sneakers. That is why I gave them only four stars.