Sleeping Bag Augmentation

Sleeping Bag Augmentation - Required for 3-Seasons Bags

If you are using a 20° 3-Season Sleeping Bag , then you need extra insulation when snowcamping.

• Overbag

  • Oversized bag fits over regular bag

  • Concept discussed at enlightenedequipment.com

  • Used in Military Modular Sleep System 

  • Increases warmth significantly

    • Extra layer of insulation

    • Adds air pocket

    • Outer bag captures moisture and helps keep inner bag dry

    • Outer bag should be synthetic to aid in drying

  • 2 smaller bags are often less expensive than a winter only bag

    • 2 bags allows you to sleep in 3 different temperature ranges (thin bag alone, thicker bag alone, or both bags together)

  • Green military overbag works nicely for this as would something from wiggys.com

• Sleeping Bag Liner 

  • Adds about 5 degrees of extra protection

  • Avoid Silk and Cotton liners designed for summer use

  • Liners sold at REI 

  • ALPS Mountaineering Brushed Polyester Sleeping Bag Liner

  • Sea to Summit Thermolite Reactor Sleeping Bag Liner

• Blanket

  • Adds 10+ degrees 

  • Synthetic or Wool 

  • Synthetic comforter 

  • Backpacking quilt

  • Military poncho liner

    • aka Woobie

    • Light, breathes, dries quickly, cozy 

    • A little too light as a stand alone augmentation in subfreezing temperatures 

    • NSN 8405-00-889-3683

  • Military style wool blanket 

    • Heavy - honestly too heavy for backpacking

      • This will crush a down sleeping bag, resulting in loss of insulation

    • Keeps you warm 

    • Water and wind resistant 

    • Multi-use

      • Emergency Hypothermia blanket

      • Ground cloth

      • Use as dry surface for prepping fire material

      • Temporary tarp

      • Can cut hole in middle to turn into a poncho

      • Cut up to make scarf, shawl, sit pad, boot insoles, pot base over snow

      • Put out fire

      • Oven Mitts 

    • Bed Blanket: NSN 7210-00-282-7950