Outdoor Research Helium Bivy Darn Tough Mesh and synthetic upper

Mesh and synthetic upper

Ultra-compact and ultra-light emergency headlamp to always have on hand

136 cubic inches

All-weather

fishing or traveling

Outdoor Research Helium Bivy Darn Tough Mesh and synthetic upperThe Helium Bivy is our lightest, best selling, and most awarded bivy sack. Thru hikers and bikepackers love the Helium for its refined footprint and reduced weight and trust it for its durable, lightweight, waterproof Pertex Diamond Fuse technology. Incredibly quick to set up and break down, the ultralight Helium Bivy is 14% lighter than its last generation and has everything the outdoor minimalist needs to be comfortable. A clamshell opening makes it