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“Heaven is under our feet as well as over our heads.”

Henry David Thoreau, Walden
USMC 3 Season Sleeping Bag vs. Military Modular Sleeping System Bag

Here is a comparison of my USMC 3 Season Sleeping Bag (with extreme cold weather bag) and IBC (improved bivy sack) to my Military Modular Sleeping System. Both systems are fantastic and have wonderful features. I do have a personal favorite but also a few thoughts on how it could be better. Take a look as I take the bags out of my USMC FILBE backpack and display these two systems out on my Aqua Quest Defender 10x10 tarp.