Helium Bivy™

Style# 40115OR

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Made from the same fabric as our go-to ultralightweight rain shell, the Helium II Jacket, the Helium Bivy is the lightest bivy we make, weighing in at a feathery 18 oz. Featuring a classic, no-nonsense clamshell design, completely waterproof, breathable and ready for many seasons of adventuring—thanks to the 70D floor—the Helium Bivy is a true minimalist bivy for fast and light solo expeditions.






  • Waterproof
  • Breathable
  • Lightweight
  • Fully Seam Taped
  • Anti-Fungal Coating on Floor
  • Five Stake Loops; One Guy-Line Loop
  • High-Volume Toe-End
  • Removable No-See-Um Netting at Opening
  • Single Shock-Corded Overhead Delrin® Pole
  • Sized to Fit Thicker Mats
  • Sleeping Pad Straps
  • Small Internal Mesh Pocket


Fabric Pertex® Shield+ 2.5L, 100% nylon 30D ripstop with clear laminate upper, 100% nylon 70D floor, 100% nylon pole tunnel, stuff sack

  • WITH POLE: 18 oz. / 510 g
  • W/O POLE: 16 oz. / 453 g

Avg. Weight (oz./g): 18oz / 510g (With Pole)

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