Outdoor Research Helium Ultralight Bivy Shelter Light Pewter

Ultralight Design for Fast and Light Travel
Built for ultralight backpackers, climbers, and fast-packers, the Helium Ultralight Bivy combines lightweight construction with waterproof and breathable performance. The 2026 updated design utilizes bluesign approved Pertex Shield NetPlus fabric made from 100% recycled nylon, providing a balance of durability, weather protection, and packability for minimalist shelter setups.

Waterproof Construction with Breathable Performance
A waterproof PU-coated floor and fully seam-taped construction help protect against wet conditions, while highly breathable fabric supports airflow inside the bivy. Dual passive ventilation flaps are designed to increase airflow and help reduce condensation. No-see-um mesh further enhances ventilation while creating a barrier between the occupant and insects.

Efficient Setup and Functional Features
The clamshell opening provides convenient entry and exit, while a single DAC aluminum pole creates structure within the bivy. A high-volume toe box adds extra space in the foot area, and reflective logos and trims improve visibility in low-light conditions. The design also incorporates 4 aluminum stakes, 6 stake loops, and 1 guy line loop to support setup in a variety of environments.