This one’s for you committed minimalists out there—mountaineers, ultralight backpackers, touring cyclists, and climbers—looking for lightweight emergency weather protection.
The Outdoor Research Helium Bivy Sack is OR’s lightest bivy, at just 18oz. Widely praised for its durability, the tough, 70-denier nylon floor is built to hold up against the roughest of terrains.
The OR Helium Bivy provides protection from the elements while remaining somewhat spacious. A curved, 2oz-pole creates 19.5 inches of headroom at its peak, which helps to combat claustrophobia.
Phil Zook Friesen, Outdoor Pursuits Director at Pacific University says, “I used the Helium Bivy Sack in Patagonia, and it did a solid job. It is lightweight, durable and waterproof. It is one of the best bivy sacks I have ever used because of how well it breathes while keeping me dry. I bought this bivy because it is more durable than some of the other bivy sacks I have used in the past.”