This product was not available before. Electric shoes have heating wires in the shoes, which convert electric energy into heat energy when electrified, so they have the function of keeping warm. From the point of view of sports, it is of course good to have batteries in it. Now shoes and insoles with batteries can keep warm for 8 ~ 16 hours, which means they can be used almost all the time except sleeping for 8 hours! If you use it at home, you can use anything. In fact, you can keep warm with a hot kettle. Therefore, when using this kind of products, mobility should be considered, and there is no other alternative equipment.
As for the radiation problem you mentioned, the current products are generally 3.7v lithium batteries with low frequency and low radiation. Because it can dry, keep warm and deodorize, it is of course beneficial to the human body. As for dependence, you use it because you need it. Don't use it when you don't need it. This has something to do with the environment. I'm sure you don't want to use it on a hot day. There is no hurry to get rid of it, so naturally there is no sense of dependence.