Works Great... Until They Don't...
Let me start by saying that when we first got these they worked GREAT and my wife LOVED them. Two weeks later they stopped working using the powerblock USB adapter so they had to plug directly into a computer. No problem, they proceeded to work great again. Then they stopped working consistently through the computer. We found that if you wiggled the USB plug just right in the USB port on the computer we could get one foot to heat up. After struggling with it for a while I realized how idiotic I was to be fighting with a $20 pair of slippers so we boxed them up and shipped them back. Looking for something different on Amazon right now. These would be SO much better if they were supplied with a chord of any substance rather than the very flimsy, cheaply made chord that it currently comes with. They could beef those up, charge an extra $ or two and these would be perfect.
Rating: 1 stars