Outdoor Research offers a comprehensive lineup of bivy bags suitable for various fast-and-light adventures. Read our guide below to find out what's been updated.
Ultralight, low-profile waterproof protection built for fast-moving objectives.
It is widely regarded as one of the benchmark lightweight bivies, and that reputation feels justified. At 530g for the bivy and pole combined, it delivers serious weather protection in a compact package.
What's Changed?
Dual passive ventilation flaps improve airflow and reduce condensation, while a high-volume toe box adds comfort through the night.
Ultralight add-on coverage that expands your Helium UL Bivy without the weight of a tent.
The Outdoor Research Helium UL Vestibule adds usability to the Helium UL Bivy without straying from its fast-and-light approach. At 160g, plus 10g per peg, it provides sheltered space for boots, a pack, and simple camp tasks while keeping overall weight down.
Why Choose the Helium UL Vestibule?
Adds meaningful covered space for gear storage or weather protection with minimal added weight.
Maximum waterproof protection and breathable comfort for exposed terrain and unpredictable weather.
The Outdoor Research Alpine XT Bivy is a serious solo shelter for exposed, unpredictable terrain. At 626g, it sits firmly in the protective end of the bivy spectrum rather than in the minimal, fast-and-light category.
What's been Updated?
The 2026 update introduces Pertex Shield Air, a three-layer waterproof laminate that improves air flow while maintaining full weather protection. In practice, this means stronger resistance to prolonged rain and wind while allowing moisture vapour to escape. The addition of a passive ventilation flap and a large mesh panel further improves airflow management.
For more in-depth information about OR's Bivvy bag range, read our guide here.
The winner will win an Outdoor Research Helium UL Bivy in the Light Pewter colourway.
The competition starts on 1st May 2026 and ends on 1st June 2026. All entrants between these dates will be entered into the draw.
The winner will be drawn on 2nd June 2026, and the winner will be notified via email. If you don't get an email from us, unfortunately, you have not been successful on this occasion. Read the full T&Cs here.
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