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Helium UL Vestibule
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Helium UL Vestibule adds dry storage and shelter to your ultralight bivy setup
Backcountry Gearhead Recommendation
"I’ve used the Helium UL Vestibule with my Helium Bivy on everything from quick overnights to shoulder-season solo missions. It’s just enough added space for gear or to sit up and cook without getting soaked. Packs light, sets up fast, and makes the bivy feel way more livable."
When we’re counting grams but refuse to sacrifice comfort or protection, we pack the Outdoor Research Helium UL Vestibule. Designed to integrate seamlessly with the Helium UL Bivy, this add-on boosts our overnight experience with extra weatherproof coverage and versatile living space.
Built with 15D ripstop nylon and a silicone coating, the Helium UL Vestibule delivers reliable waterproof protection and enhanced durability without adding unnecessary weight. It sets up quickly using a single trekking pole and stakes, and its barrel-style attachment keeps it secure through shifting weather. Whether we're keeping gear dry or stretching out for a backcountry book session, the vestibule keeps us covered—without compromising our fast-and-light approach.
Details
- Lightweight, waterproof vestibule designed for Helium UL Bivy integration
- Creates protected space for gear storage, cooking, or added comfort
- Constructed from 15D ripstop nylon with durable silicone coating
- Attaches securely via barrel system and two aluminum stakes
- Designed for quick setup using a single trekking pole
- Semi-translucent fabric adds light without exposure
- Reflective logo and trim for visibility in low light
- Weighs just 5.46oz for minimal impact on pack weight
- Item #ODRZ97Y
- Material
- 100% nylon ripstop
- Compatibility
- Helium UL Bivy
- Claimed Weight
- 5.46oz
- Activity
- backpacking, camping

Outdoor Challenges, Solved
Outdoor Research applies the research method to solve the most demanding challenges faced outdoors. This gear and commitment to innovation stand the test of time.