USMC Improved Modular Sleep System

CONDITION: USED, GOOD TO VERY GOOD CONDITION. MAY EXHIBIT MINOR COSMETIC FLAWS SUCH AS MILD SOILING BUT THE MOSQUITO MESH ON THE BIVY COVER IS INTACT AS IS THE WIRE ALTHOUGH THE NETTING MAY HAVE MINOR PROFESSIONAL REPAIRS. THE SLEEPING BAGS MAY EXHIBIT MINOR PROFESSIONAL REPAIRS BUT THESE WILL BE MINOR, RARE, AND DO NOT IMPEDE FUNCTIONALITY. 

INCLUDES:

USMC Improved Bivy Cover

3 Season Sleeping bag

Cold Weather bag

Waterproof Compression Sack 

Leave it to the Marines to truly improve the old Modular Sleep System. They started by re-thinking the waterproof bivy cover. They made it front opening and added a generously sized opening supported by wire to stand off of your face and covered in mosquito netting. 

Overview 
Operation Enduring Freedom (OEF) After Action Reports 
identify a compelling need to provide Marines with a sleeping 
bag that increases protection from environmental conditions 
while reducing weight and volume. OEF Marines carried only 
the modular patrol bag during mountain operations to decrease 
weight and volume but provided inadequate protection in the 
cold mountainous environment. 
 
3 Season Bag System Features 
• The system includes a sleeping bag, bivy cover, 
waterproofing compression stuff sack at a total weight of 
4.8 lbs as a 10% weight reduction with improved 
protection. 
• The system Increases temperature by 15 degrees to 
protect at 20 deg F and above for wet and dry conditions 
for 4 hours uninterrupted sleep. Wearing clothing warming 
layers inside the bag provides protection down to 0 deg F. 
• The bivy cover is 18% lighter and provides improved 
comfort, protection and volume. It allows the Marine to be 
totally encapsulated under extreme weather conditions.  
An integrated flexible wire allows the bivy to stand off from 
the face and a screen window can be fully or partially 
opened.

Additionally, this sleep system ships with the Cold Weather heavy sleeping bag which provides additional protection to -13F when using thermal underwear and all three bags and allows for 6 hours of uninterrupted sleep. It even protects you from Firewatch*.

*This statement has not been evaluated by the FDA for compliance or accuracy.