They work
Generally, I am satisfied with these insoles, they are ultra thin comparing to other heated insoles that don't leave room for your feet in the shoes, these insoles will fit easily in most of not all the shoes you wear and they do work. They do an excellent job of keeping your feet warm and they warm up quickly too. I own a more expensive pair that take about 15 minutes to get to the right temperature. With these guys you will feel warm within 3 minutes. They also get warmer than my expensive heated insoles but not too hot, just right. The reason why I am giving it only 3 starts is because of 3 issues:<br />1. It runs on 6 aa batteries that get you about 3 hours of heat at most. I found myself spending too much money on batteries and was not too happy with how long the heat lasted, in the end there is no dial to set the temperature so it's not like you can save some power.<br />2. There not wireless, the battery pack is strapped to your ankles... I found that okay when wearing sneakers or regular shoes, but boots were too thick to wrap the battery pack around since they cover your ankles, it can be quite uncomfortable.<br />3. I have used these for nearly 2 months and one of the battery packs stopped working.<br /><br />In the end, for the price it is totally worth keeping your feet warm when you have to go outside in the cold. The key is to think of them as a temporary solution/seasonal because they will most likely not last you very long.
Rating: 3 stars