These things are so fly I'm not going to lie I wish I had them in my size. They're rechargeable they've got different sequences that the lights go in and they have roller skates in the bottom of them. You can't ask for anything cooler. Brand new, got them for my great-niece she tried them on and they didn't fit her. Her loss is your score. Please review all the photos as they serve part of the description. They are a size 35 from China, which is the equivalent to 4 to 4.5 US.