Outdoor Research Helium Bivy - Slate CHideaHikeSocks Two full stainless steel liners

Two full stainless steel liners provide added rigidity

Thanks to the innovative S-Café technology integrated in its fibres

A soft and stretchy tank top with a sleek

A knit waistband for stability and comfort

with very 'legitimate' studies indicating that carrying two boulder pads to the crag is the best warmup you can get

Outdoor Research Helium Bivy - Slate CHideaHikeSocks Two full stainless steel linersThe 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