Outdoor Research Helium UL Bivy
A minimalist shelter for ultralight backpackers and climbers, this Outdoor Research bivy offers waterproof protection. Its Pertex® fabric is made from recycled nylon. And it weighs just 1 lb. 2 oz.




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- Updated for 2026 to deliver durable, lightweight performance with a fully seam-taped design and waterproof polyurethane-coated floor for reliable weather protection
- Made with bluesign®-approved 2.5-layer Pertex® Shield NetPlus® fabric from 100% recycled nylon; polyurethane-coated floor
- Dual passive ventilation flaps improve airflow and reduce condensation
- Single DAC aluminum pole design
- Highly breathable
- Lightweight
- No-see-um mesh
- High-volume toe box adds comfort through the night
- Clamshell opening
- 4 aluminum stakes
- 6 stake loops
- 1 guyline loop
- Reflective logo and trims
- Top: 2.5L Pertex® Shield NetPlus® laminate: 100% recycled 30-denier ripstop nylon
- Floor: 40-denier ripstop nylon with polyurethane coating
Imported.
View the Outdoor Research Helium Product LineView all Outdoor Research Bivy Sacks| Best Use | Backpacking |
|---|---|
| Seasons | 3-season |
| Sleeping Capacity | 1-person |
| Weight | 1 lb. 2.02 oz. |
| Packed Size | 6.25 x 12.5 inches |
| Bivy Length | 82 inches |
| Shoulder Width | 28 inches |
| Ultralight | Yes |
| Sustainability | Contains materials that meet the bluesign® criteria Contains recycled materials |
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