Theres a lot of length at my toes, but my heel is almost hanging over the edge at the back. Would buy over the other options on Amazon simply because it glows. This adapter enables that connection. My only complaint is the lack of colors. The newer version in addition to USB is also Blue Tooth and enabled with its own dongle. They?re very comfortable too, I can fall asleep in them without getting sore ears. Great substitute for Native shoes. Im hoping they will let me exchange it for a bigger size because I really do want to try the product. Shoes arrived on time, fits my moms feet perfectly, and she has corns so its pretty comfortable. Battery life is at best 12 hours.