What is the Hydrogen Extreme Jacket?
The Hydrogen Extreme thrives on fast, lightweight ascents. Featuring a lightweight, breathable Polartec Alpha insulation and an air-permeable Pertex Quantum Air outer fabric, it's focused on offering the highest levels of breathability whilst providing warmth when moving quickly in mountainous environments.
What is it made of?
Insulation: Warmth is taken care of by 120g/m2 of Polartec Alpha. Originally designed for the U.S Special Forces, Alpha is a little different to your standard insulation in that it's designed specifically for start-stop activities in cold conditions. When your body heats up and consequently releases sweat, the fluffy insulation wicks away the moisture and disperses it before it can condensate. Not only does this fluffy insulation wick away sweat, dries quickly, still provides warmth when wet and is also super comfortable next to skin.
Outer fabric: Along with the super breathable insulation, you also get an incredibly breathable Pertex Quantum Air outer fabric. Quantum Air perfectly balances wind resistance, water resistance and air-permeability, meaning it'll repel light wind and rain but will also allow a little wind to pass through, increasing breathability. The combination of the sweat-wicking insulation and the super breathable outer fabric means the Hydrogen Extreme is ideal for those who run on the warm side.
What are the features?
Starting at the top, you get a fully adjustable, insulated, climbing helmet compatible hood with a stiffened peak. Moving down, articulated arms keep the hem of the jacket where it's supposed to be when reaching above your head for holds, while a two-way front zip allows you to layer the jacket over a climbing harness without stretching the fabric. Two insulated hand pockets and two chest pockets take care of the small bits and bobs you may need to carry. Lastly, you've got an adjustable hem to seal in the warmth and some nice velcro adjusters on the cuffs.
How does it fit?
The Hydrogen features a fairly long, slim fit which is designed to sit close to your skin to maximise sweat management. Although the outer fabric is super stretchy, we'd only recommend having a lightweight baselayer underneath.
Where does it fit in the layering system?
The Hydrogen Extreme is designed primarily as an outer layer over a baselayer when moving quickly, however it can just as effectively be used as a midlayer if you needed to stick a shell over the top in particularly foul conditions.
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Wind and water resistant
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Exceptionally breathable
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Fluffy inner fabric
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Two way main zip
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Insulated hood
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Helmet compatible
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Two hand pockets
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Two chest pockets
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Velcro cuffs
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Adjustable hem