I absolutely love my adult sized Reefs for their comfort and durability.  I've owned the same pair for eight years and would have continued the love affair if my puppy hadn't decided to chew them into little pieces.  I so loved mine that I bought my daughter her first pair and she loves them as well.  Great arch support and ankle strap to keep them on her feet.  They're more flexible that other brands which is good for her foot development and allows navigation of any terrain.