Representing the Division during the 2019 Best Ranger Competition.
Marine Corps Sleep System Training
The Three Season Sleep System (3S) and Extreme Cold Weather Bag, when used with the required cold weather clothing layers, are effective down to -13 degrees Fahrenheit. This video will show you how to get the most out of your sleep system, from deciding what gear you need to pack to how to properly use and care for the system. Still have questions? Email PdMICE@usmc.mil.