Outdoor Research Helium Bivy, Slate, One Size
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Ultralight bivy protection for fast-and-light trips
An ultralight, waterproof and breathable bivy with a clamshell opening for fast-and-light nights out.
The Outdoor Research Helium Bivy is built for nights when keeping pack weight down matters, without giving up the basic protection you want from a bivy bag. It uses the brand’s Helium fabric with Diamond Fuse technology and a clamshell opening that makes getting in and out less awkward than a more closed design.
The listed finish is Slate and the selected size is One Size.
Materials and weather protection
- bluesign approved Pertex Shield Diamond Fuse 2.5L 100% nylon upper
- 30D ripstop upper and a 40D nylon floor with TPU lamination
- Waterproof, breathable and fully seam-taped construction
- bluesign approved 100% polyester mesh with no-see-um mesh detailing
Design details that matter on the trail
- Single-pole system
- Reflective logo and trims
- Two stake loops and one guy line loop
- High-volume toe end
- Two internal fly fasteners
This is aimed at people who want a compact shelter layer for fast-moving trips and minimal setups. The clamshell opening and mesh details should make it feel more manageable for short overnights or emergency use, while the seam-taped waterproof build gives it a more serious feel than a simple cover.
Because bivy bags are inherently snug, it is worth checking that this style suits how you sleep and how much room you prefer around you.