Bought this sandal largely because of the 'hydro' part as well as the idea that it would be a flexible all-around hiking and play sandal for our 5-year-old. What we found though was that the shoes take a loooooong time to dry (like, a whole day or night), and when worn at all damp they consistently created blisters on the backs of her heels.<br /><br />Otherwise a very comfortable pair of shoes.  We like the colors, which are exactly as shown, and the toe box protection is great.