Check the bag carefully for any tags with instructions on how to wash the bag before anything. Find a laundromat with a very large washer and dryer. Wash the sleeping bag on a cold setting using very mild soap. Remove the sleeping bag from the washer and place it in the dryer with two or three tennis balls. Click to see full answer. Also, how do you clean a military sleep system? Do not rinse your sleeping bag and hang it up to dry. How to machine wash a sleeping bag: Most sleeping bags can be machine washed, as long as a front-loading washer (or top-loading machine without an agitator) is used. Wash on the gentle cycle in warm (or cold) water with an appropriate soap. Also Know, how does the Army sleep system go together? Putting the sleep system together is a fairly simple task. If you’re sleeping in warmer climates (> 30 F) then just combine the bivy sac with the patrol bag. For temperatures ranging in -10 F to 30 F just the Intermediate Cold Weather bag in combination with the bivy would be used. Also, can I wash a sleeping bag in the washing machine? Sleeping bags have to be cleaned in a front-loader washing machine as the agitation in a traditional top-loader can damage the insulation. Wash one sleeping bag at a time and be sure to toss in a few other light items to make sure the load remains balanced. We recommend using the gentle cycle and cool water.How do you wash a down sleeping bag at home? Steps Lay out your sleeping bag into the bathtub and begin gently massaging your bag. Leave your bag in the tub to soak for one hour. Drain the tub and refill it with clean water (no soap). Repeat step 5 as much as necessary. Dry your bag by laying it on a clean surface outside, such as grass or a beach towel.