My son saw the video for these and just HAD to have them for his summer shoes this year.  I was skeptical of something that claimed to change colors in the sun, etc.  Usually when a product claims that it doesn't work the way you anticipate and it's a big disappointment.  But I was pleasantly surprised when they arrived.  The first thing my son did when I gave them to him to try on was carry them outside in the sun to see them change colors and they did!  He loves to show people how his shoes change color.  They are a little on the pricey side for a kid's sandal, but they are Crocs after all and they tend to have a slightly higher price tag to begin with.  As an FYI, they are a rather wide shoe on the footbed.  So if you have a child with a narrow foot, they will have plenty of room in these.  But my son says they are very comfy and he just loves them!