It is easy to wear off.
When wearing, if you put a toe in a shoe you can just wear it as a spot (※ shoelace only goes to the position where there is no obstacle to walking).
Waterproofness is somewhat subtle.
Even when I started wearing it, I was slightly dyed from the part of walking wrinkle (← part which breaks when walking) a little two months after I began to wear it.
I do not pretend to walk in a wet place, but I was sorry a little despite the fact that my shoes are still solid.