The USGI Military Sleep System Bivy Sack or Bivy Cover is one of the most valuable pieces of survival and camping equipment available. Staying warm and dry is important in all conditions when it comes to enjoying or even surviving the outdoors. The Military Issue Bivy Cover, issued NSN: 8465-01-547-2644, works admirably in this area.

This U.S. Military Issue Bivy Cover was originally designed for the modular sleep system which includes a warm weather and cold weather sleeping bag, compression sack and this bivy.  The bivy is the outer cover that keeps the whole system dry.  However, this bivy will work just fine with other sleeping bags or with nothing at all.  We recommend this to our clients who simply want to have a way to stay dry and moderately warm in an emergency situation.