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Color: Coyote
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Get ready for fast-and-light missions with this clamshell-opening Outdoor Research Helium bivy. Its lightweight, durable fabric with Diamond Fuse technology gives it its ultralight prowess.


  • Waterproof/breathable Pertex® Shield fabric is fully seam-taped for protection from the elements
  • Diamond Fuse fabric uses yarns with unique diamond-shaped filaments that lock together to create a durable and highly abrasion-resistant fabric
  • No-nonsense clamshell opening with 2 internal fly fasteners is sure to handle seasons of adventuring to come
  • No-see-um mesh helps keep the bugs out
  • Single-pole system allows for quick setup and breakdown
  • High-volume toe end
  • 2 stake loops; 1 guyline loop
  • Reflective logo and trims
  • Weighs 15.8 oz. with the pole and 14.5 oz. without


View the Outdoor Research Helium Product LineView all Outdoor Research Bivy Sacks

Technical Specs

Item #203558
Best Use



3 - 4-season

Sleeping Capacity



With pole: 15.8 oz.; without pole: 14.5

Packed Size

3.5 x 12.25 inches

Bivy Length

82 inches

Shoulder Width

26 inches




Contains materials that meet the bluesign® criteria

50 reviews with an average rating of 3.5 out of 5 stars

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