This is a heavier, thicker, and more substantial shoe than its predecessors.  I actually liked the lightness of the original Dozer, especially for biking, but this one is more running shoe like and therefore a bit more versatile and comfortable and stable.  Especially in the heel area, you notice greater stability and padding underfoot.  The arch is also pretty pronounced, especially compared to the Dozer II.  I completely wore out my original Dozers and I keep the Dozers II at a different location, so these are my new bike shoes.  They look like they will last a long time.  Best sandals series I've ever owned.