The air cushion on the bottom is made of flimsy plastic
I wear size 13d because I'm taller. 6 inches 3 feet 235 lbs. Not such a big guy. In any case. Two days at the skate park and the heels of these boots started falling apart. My old globes are three years old and in excellent condition.
Pros
Great shoes. They are very comfortable.
Cons
May not provide adequate traction on certain surfaces.