Helium Emergency Bivy

Outdoor Research

Turn your 3-season sleeping bag into a 4-season bag by layering it with the Helium Emergency Bivy. Just like how you'd put a hard shell over your puffy jacket, this bivy was designed to protect your sleeping bag from the elements while trapping in warmth. Built with the best-selling, award-winning Helium fabric, this ultralight shelter system uses a simple tube-like construction and cinch closure to seal out wetness and save on bulk. Weighing in at an undetectable 9.6 ounces and packing down to the size of a beer can, the Helium Emergency Bivy is perfect for adding warmth and peace of mind to your backcountry sleep setup.



  • Water-Resistant
  • Breathable
  • Ultra Lightweight
  • Critically Seam-Taped


  • Drawcord Opening Closure
  • Packable
  • Reflective Logo


  • FABRIC: 97% cotton, 3% spandex crown and brim, 100% polyester mesh
  • WEIGHT: 3.7 oz./105 g

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