Like all the Merrell Jungle Mocs, these are well-made and durable shoes. Unfortunately, Merrell chose to make these Ventilator model shoes on a different last than the standard Jungle Mocs...these are narrower, slightly straighter from heel to toe, and not as deep in the forefoot so the net result is a smaller, tighter fit. I wear an 11D in the normal Jungle Mocs and the same size in the Ventilator model is tight enough to be distinctly uncomfortable after a couple hours...not sure I'll even be able to wear these enough to break them in and see if they stretch out. Merrell, if you're listening, please make sure you build your shoes on the same last, to the same dimensions for each size/width!