Anyway it's strong. The shoe sole was not slippery and it was okay on the roof tile. However, due to the shallow grooves, roof tiles with many dust and sand are not much different from sneakers. It seems that it gets familiar to your feet as you wear it long. The difficulty is that the surface is dirty.
I am wearing a little heavy but I will try to train my legs. The outside has durability, but it is easy to get dirty because it is slightly irregular. Although it washes once a month, there is no peeling at the joint of the bottom and it is strong. There was no invasion of water even if we walked through the puddle. It is also hard to slip on the roof tiles. Only one, the inner lining of the heel has been torn, but since it is easy to take off and wear it, there will be no choice.