I recently got addicted to rock climbing, and these shoes have really delivered.  The sole is sturdy for those small footholds and quite comfortable throughout a 2-4 hour session.  Only complaint I have is that my left, big toe is always feeling tons of pain (although, that could be the need for me to go up a half size, otherwise my left foot is just weird).  Regardless, I've been bouldering at a local gym for a few months, and these continue to be awesome. I'd buy them again.