Had ordered on impulse for a New Zealand / Fiji vacation my shoes. Both countries are conspicuous by sharp rocks and coral. Shoes fit like a glove. The specified sizes are like my leather shoes. In the water they not wide. What survived the shoes: - Volcanic rock (The sharp version) - Coral reefs (. No, I'm not in there walking around Unfortunately, things eventually die off and are then washed) - Beach, coarse and fine with mussels - Hike through rainforest - Sandboarding (far better than flip flops :-)) - Swimming in rivers with what I know for underground.