Heated insoles are specially designed shoe inserts that provide warmth to the feet. They are often powered by rechargeable batteries and can be controlled with a remote or smartphone app. These insoles are popular among outdoor enthusiasts, people with poor circulation, and those who work in cold environments. Made from materials that retain heat, heated insoles can help improve comfort and prevent frostbite in cold weather. They come in various sizes and can fit into most types of footwear, including boots, sneakers, and dress shoes. Many models offer adjustable heat settings to suit individual preferences.