Helium Bivy™

Style# 40115OR

Made from ultra-lightweight, waterproof, breathable Pertex® Shield+ fabric, the Helium Bivy is the most lightweight bivy we make, weighing in at a feathery 18 oz. Featuring a classic, no-nonsense clamshell design, and 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
  • 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 upper // 100% nylon, 70D with TPU lamination floor

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

Avg. Weight (oz./g): 18.0oz / 510g (W/ Pole)

Customer Reviews

excellent so far (Review by Cam)

i rated it at a "4" because I've only used a half dozen times but it has been flawless.
Pro's: lots of room, breathed well in semi-humid conditions, packs up really small, waterproof, pole works great, cheap!
Con's: I see the 2.5 layer not breathing as well as its 3 layer counterparts once the cold weather camping starts up but cannot say for sure, almost too roomy/ or baggy.

(Posted on 10/15/14)

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