Outdoor Research Helium Bivy

Pertex Shield 2.5L Fabric / Hoop
Weighs 448g (excluding bag)
Code: SS19867
  • £199.99
  • (FREE Delivery on orders over £15)
Item out of Stock | Usually dispatched within 24 hours

The best selling Helium bivy has been updated and is now even lighter whilst still retaining its excellent features. It has a separate insect mesh 'door' and a front pole that gives the whole thing some structure and stops the fabric from laying on your face.

Outdoor Research says:

Award winning for it's ultralight prowess, made even lighter.

Our Helium Bivy used to be the best-selling, award-winning, lightest shelter offered by Outdoor Research - until we outshone it with this: The newly renovated Helium Bivy. 14% lighter than its previous version, the Helium Bivy is ideal for multiday minimalists who are looking to trade weight for speed, agility, and performance. Thru-hikers and bikepackers love the new Helium for its refined footprint and reduced weight, and trust it for its feathery waterproof and breathable Pertex® Shield+ fabric that doesn't compromise on durability. A no-nonsense clamshell opening is sure to handle seasons of adventuring to come.

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Outdoor Research's Helium Bivy, is an extremely lightweight shelter (56g lighter than the previous version) that still manages to retain an insect screen and front pole to give you some wriggle room. There's no rear pole so the leg area is just like a conventional bivy bag.

The groundsheet is made from a tougher material than the shell and is 'bathtub style' to ensure good performance even in very wet conditions. The hood can be fastened back to the pole and you can leave the insect door in place, so on drier nights you can keep the condensation down by leaving the hood open. Although another couple of attachment points would have made tying back the hood a neater proposition.

- Reviewed by Ultralight Outdoor Gear

  • Fabric Performance: Waterproof, Breathable, Ulra Lightweight, Fully Seam-Taped, Durable, No-See-Um Mesh
  • Design Features: Delrin Single Pole System, Reflective Logo and Trims, Two Stake Loops, One Guy Line Loop, High Volume Toe End, Clamshell Opening

By placing quality first, we can offer the finest guarantee in the industry for each and every product – the Outdoor Research Infinite Guarantee™. We believe so strongly in the quality of the apparel and gear we make that if our product fails to meet your needs at any time, we are happy to replace it. Our products are guaranteed forever.

  • Weight with pole: 448g (excludes bag)
  • Weight without pole: 396g (excludes bag)
  • Length: 82in
  • Width: 26in (widest), 19in (narrowest)
  • Height: 19 3/4in (highest), 14 3/8in (lowest)


  • Pertex Shield 2.5L, 100% nylon, 30D ripstop upper
  • Lower - 100% nylon, 40D with TPU lamination floor


Showing our 1 review for Outdoor Research Helium Bivy. Write a review ›
Review Summary - 4 out of 5 based on 1 rating.
April 5, 2021 | John P
Bit of condensation

Slept out among dunes in this for a few nights. Lower profile and slightly lighter than my tent. I did suffer from condensation at the bottom with the bag wetting the outside of my sleeping bag. A common problem with bivy bags, as is what to do with your boots and backpack.

Ultralight Outdoor Gear Limited