In the past few years, we have covered plenty of neat heated jackets and gloves for cold winter days and nights. These smartphone controlled electric heated socks are also worth a look. They help keep your toes warm. They come with 500mAh batteries and 3 temperature levels (104, 122 and 140F).
To get started, simply download the HiWarm app from the app store. You can use it to change temperature, timer, and other settings with a touch.