The Neutrino Endurance 400 XL Sleeping Bag is a down filled bag using 800 fill power Hydrophobic European Goose down that is designed primarily for use by alpine climbers.
The outer fabric is Pertex Endurance that is water resistant and offers piece of mind and protection in damp environments. It has a mummy shape so is streamlined and tapered to offer minimum weight and maximum warmth. The bag uses a lightweight Pertex Quantum lining and similar outer that allows the down fill to loft to its maximum as well as keeping the weight to a minimum while protecting the down from damp conditions, further weight saving comes from only having a three quarter length zip.
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