Outdoor Research Helium UL Bivy - light pewter

Waterproof Protection Without the Weight

The Helium UL Bivy is built for ultralight backpackers, climbers, and fast-packers who need waterproof protection and breathability in a minimalist shelter.

Made with bluesign® approved Pertex® Shield NetPlus® fabric from 100% recycled nylon, the Helium UL Bivy is newly updated for 2026 to deliver durable, lightweight performance with a fully seam-taped design and waterproof PU-coated floor for reliable weather protection. Dual passive ventilation flaps improve airflow and reduce condensation, while a high-volume toe box adds comfort through the night. A clamshell opening, single DAC aluminum pole, and six stakes/stake loops make setup quick and efficient in any terrain.

Features of the Outdoor Research Helium UL Bivy:

• Fully Seam Taped
• Highly Breathable
• Lightweight
• No-See-Um Mesh
• Waterproof
• 2026 Updated Design
• Clamshell Opening
• Dual Passive Ventilation Flaps increases airflow and reduces condensation
• Four Aluminum Stakes
• High Volume Toe Box
• One Guy Line Loop
• Reflective Logo and Trims
• Single DAC Aluminum pole design
• Six Stake Loops