I use to wear Teva sandal with the Spider sole , which be the best for climb around wet granite creak in the Southern Sierra north of Lake Isabella . the sole of other sandal and boot do not grip as well , and slip there be dangerous . in the summer of 2009 I wear Keen Newport h2 sandal , and they be as good as the Spider sole on the Tevas . the Keen be more protective because of the toe guard , and about the same for pick up and then release sand and pebble between my foot and the sandal upper . the keen last five or six month , I wear they all the time when I be not at work . on hike , walk in the neighborhood and on the beach , as a casual shoe in Winter with a liner sock . good on wet concrete and pavement , too . the tread wear out and the ball of my foot make such a deep indentation in the upper that there be not enough cushion any more . the rest of the sandal be still in great shape , no thread problem for I . by the way , I always leave the `` tie '' in its most loose position , except in creek . I will replace they when the local REI restock in Spring 2010 . till then , Crocs in the city and at the beach . I buy a lot of stuff on Amazon , but not shoe .