I purchased these bogs for my daughter who is "The Penguin Whisperer" at the Living Planet Aquarium in Sandy, Utah because the boots she was wearing didn't keep her feet warm enough in the 42 degrees that she works in daily.  The new Bogs worked fantastic!  She has problems with her feet, and when she started wearing her Bogs she said it was like heaven.  There is an arch support and cushion which does help and the boot stays tight to her calves which keeps the warmth in.  I/she would definitely recommend the Bogs.  The penguins love the new colors as well.