Outdoor Research Helium Bivy - Classic Blue CHideaApparelUnderwear The 150 cm version has

The 150 cm version has elasticized arms to avoid hindering progression

It has a HeadLocker axe attachment and TipGripper walking pole attachment

The Duck-R conforms to EN 12841 (same as the Petzl ASAP)

The concept of chalk bag: the chalk ball is integrated

resulting in a controlled braking distance

Outdoor Research Helium Bivy - Classic Blue CHideaApparelUnderwear The 150 cm version hasThe Helium Bivy is Outdoor Research's lightest, best selling, and most awarded bivy sack of all time. Incredibly quick to set up and breakdown, the ultralight Helium Bivy is 14% lighter than its last generation, and has everything the outdoor minimalist needs to be comfortable. 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.