VibramMen's V-aqua Black, Men’s Men's V-aqua Black Walking Shoe

Have the sizes changed over the years? I bought 42’s like 10 years ago in one of the original cross trainers. Those fit great till they gave out.

Are these puncture resistant?

Aloha! has anyone used these long-term on sharp volcanic rock (‘a’ā) like we have here on hawai‘i island? how do the soles hold up? mahalo!