What is the Alpha Flux jacket?
The Alpha Flux is a lightly insulated jacket with a soft fleece inner, designed to provide reliable warmth in cold conditions when moving quickly. This is the perfect jacket for mountaineering, hill walking or climbing as it breathes superbly to prevent overheating yet retains enough insulation to keep you warm and comfortable.
What is the Alpha Flux made from?
Insulation: Polartec Alpha insulation was developed initially to meet the demands of military users operating in mountainous terrain, they needed warmth, breathability and lightweight performance across a wide temperature range for their strenuous stop-start maneuvers. Alpha insulation is made up of durable lofted synthetic fibres connected to a solid mesh core, think of it like a super fluffy string vest. These fluffy hydrophobic fibres allow a greater airflow to increase breathability and actively pull moisture away from the body whilst trapping warm air so you keep dry and comfortable even when working hard.
Outer fabric: This tightly woven face fabric will keep out the wind and light rain yet still allow the garment to breathe. The addition of stretch fleece panels down the sides, cuffs and thumb loops gives superb freedom of movement and keeps the jacket fitting closely to really get the most out of that insulation. The fleece panels have been treated with Polygiene STAY FRESH odour control treatment; this reduces the build-up of bacteria so even if you get sweaty your jacket wont stink. Polygiene is a naturally occurring antimicrobial agent that lasts for the life of the garment; it is completely safe next to the skin and is environmentally friendly. To add further comfort, Rab use a soft (almost wooly) fleece to wick away sweat and to keep you comfortable for long durations.
What are the Alpha's features?
Built with a fixed, close fitting under helmet hood and two zipped hand pockets, it's not overloaded with features so the weight and pack size are kept to a minimum.
Where does it fit in the layering system?
The Alpha Flux is designed to either be used as an outer layer when moving quickly to maximise breathability, or as a midlayer in colder conditions when the weather may not be quite as favourable or if you're heading at a slower pace.
Summary
The Alpha Flux is perfect for those who run hot or who frequently aim for the 'fast and light' approach. It's super breathable, comfortable, warm and has a brilliant fit.
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Soft fleece lining
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Insulated
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Fleece side panels
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Perfect for moving quickly
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Under helmet hood
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Slim fit
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Thumb loops