Outdoor Research Helium Bivy - Slate Colour:Slate The sling also tapers down

The sling also tapers down to a neat 16mm ensuring it sits securely in the crook of the biner and always loads correctly

The original oval shape was developed on the principle of a chain link fitted with a manual nut opening

on the neck

The effective and long-lasting formula gives you all-day protection

A lightweight midlayer with an understated style and slim fit

Outdoor Research Helium Bivy - Slate Colour:Slate The sling also tapers downThe Helium Bivy is Outdoor Research's 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