Just finished a book in which the heroine had to wear a boot and ended up calling it "Wonder Boot" throughout the book; therefore I have dubbed mine "Wonder Boot". Mine has the metal as well and can be hard on the ankle unless you tuck the flap in really well over the ankle. (also helps if you wear thick socks..hard in the summer time!)
Wonder Boot! I <3 it! With my air cast I took one look at it and imagined that I could wear two and have rocket boots. I said paint it red and yellow and call me Iron Man. Or Tin Man because I was so fussy about tinkering with the air in the boot.