These have been through every mud puddle in a 5 mile radius of our house and are still going strong.  I love that there is one joined velcro strap...makes it that much easier to put on.  The material is great and my baby loves them (although not as much as the shoes which blink/light up when you walk, of course!).  They seem very comfortable and the color is better than appears in the photo. (We have the royal blue one)  A little girl in our music class has the purple and they are great too!