Heated insoles are nothing new. Many outdoor enthusiasts have been using them during cold seasons to stay warm. +Winter insoles are thin and rechargeable. They have an app that let you control their temperature. +Winter insoles are pretty easy to use. Simply insert them into your shoes, and sync them with your app to control the temperature in a couple of seconds.
+Winter insoles keep you comfortable and can be charged wirelessly. You can find out more about it here.