If you are going out camping and resenting the cold nighttime weather, then make sure you bring along the ActionHeat 5 Volt Battery-Heated Sleeping Bag. This sleeping bag has a Tri-Zone heating system with three built-in, carbon fiber heating panels to help regulate your core body temperature, and it has heat-trapping and synthetic-fill insulations to improve airflow without sacrificing warmth. It is also weather resistant to remain resilient in unlikely weather conditions, and it is crafted from ActionFlex material that ensures you will have a comfortable night's rest.