Helium UL Bivy Sizes:OS file tread rubber grip

file tread rubber grip

while LIGHTRANGE™ technology delivers optimum moisture management to keep you comfortable when it's blazing hot on the trail

moisture-wicking power of merino wool makes these socks so dam good you're covered on both fronts

accessory loop for pick-up bags or small attachable leash accessories

it's the must-have safety tool for every vehicle

Helium UL Bivy Sizes:OS file tread rubber gripWaterproof Protection Without the Weight. The Helium UL Bivy is built for ultralight backpackers, climbers, and fast packers who need waterproof protection and breathability in a minimalist shelter. Made with bluesign approved Pertex Shield NetPlus fabric from 100% recycled nylon, the Helium UL Bivy is newly updated for 2026 to deliver durable, lightweight performance with a fully seam taped design and waterproof PU coated floor for reliable weather