Helium UL Bivy masters and the wide 43mm mouth

and the wide 43mm mouth makes filling from any lake

Lightweight build ideal for daily essentials and travel gear

designed with a nod to the classic mountaineering aesthetic

packaged weight - 2590g

Helium UL Bivy masters and the wide 43mm mouthDesigned for ultralight backpackers, climbers and fast packers, the Helium UL Bivy delivers serious waterproof protection without unnecessary weight. Updated with a new membrane, this version is constructed from bluesign approved Pertex Shield NetPlus fabric made from 100% recycled nylon, with a fully seam taped body and waterproof PU coated floor built to handle whatever the weather throws at it. Dual passive ventilation flaps keep airflow moving and