Heated mattress pads are a great way to add extra warmth and comfort to your bed during the colder months. These pads are designed to be placed on top of your mattress and provide heat through the use of electricity, self-heating technology, or water. Heated mattress pads can be a useful tool for people who tend to get cold at night, have circulation issues, or experience muscle pain. They can also provide additional warmth for people who live in colder climates or have drafty homes.