You will notice that this is a serious sleeping bag right away!  The U.S. issue Intermediate Sleeping Bag was designed to be used by itself or along with the patrol and bivy cover creating a modular sleeping system.  The USMC Issue intermediate bag is rated from 30 degrees to -10 degrees and offers features like chest baffling, roomy box foot design, sculptured hood and 2 way double zipper making this a well build fall sleeping bag that can turn into winter.  This is a great bag hands down.  

Features & Specs  

• Draft flap prevents heat loss
• Hood adjusts for heat retention
• Nylon draw-cord
• Measures 85 x 34′ to 85 x 24″
• Reversible double-pull zipper slider allows top or bottom ventilation
• Can be combined and part of the USMC Sleeping bag system
• NSN 8465-01-398-0687
• Used Military Surplus