What is the Nimbus Jacket?
A brilliant alternative to down, the Nimbus uses Rab's synthetic Cirrus insulation to provide warmth in cold and damp conditions.
What is it made of?
Insulation: Rab have used their new Cirrus insulation for the Nimbus Jacket; Cirrus is a 3M Featherless synthetic insulation that provides a high performance alternative to natural down. It was designed to mimic the look and feel of natural down with all the benefits and none of the drawbacks. It retains two times the loft of down when wet, breathes superbly, has no allergens, retains warmth even when wet (more so than Hydrophobic down), compresses easily and dries exceptionally quickly. Mini stitch through baffles keep the insulation in place and give the Nimbus a clean and minimalist look. If you are familiar with Rab products this is like a synthetic filled version of their superb Microlight Alpine Jacket. The filling compresses well when packed and is robust and durable. Its resistance to moisture, warmth when wet and speed of drying are extremely high; superior even to Hydrophobic down and previous synthetic insulation.
Outer/Inner fabric: Housing the clever insulation is a Pertex Quantum fabric. This fabric is wind resistant, water resistant, packs down to a fraction of its original size and allows your sweat to escape thanks to its fantastic breathability. Inside, an Atmos fabric slides easily over additional layers and promotes moisture displacement. The combination of insulation and fabrics provide unparalleled levels of breathability making the Nimbus perfect for active use in cold and damp conditions as a mid layer or stand alone jacket.
What are the features?
Features wise, you get a fully insulated hood which will fit underneath a climbing helmet for those chilly belays, while a stretch binding keeps it snug around your face. Storage is provided by two hand pockets and one zipped internal security pocket. Elasticated cuffs and a hem drawcord seal in the warmth.
Where does it fit in the layering system?
It can either be used as a super warm midlayer in miserable, cold conditions with a shell over the top, or can just as easily be used on its own if the weather is on your side.
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Pertex Quantum outer fabric
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100% nylon air-permeable lining
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Cirrus powered by 3M Featherless insulation
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Stitch through mini baffles
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Over or under helmet hood with Lycra binding
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YKK VISLON front zip with internal baffle
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2 YKK zipped hand warmer pockets - left pocket doubles as a stuff sack.
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1 YKK zipped internal security pocket
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Elasticated Lycra cuffs
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Hem drawcord
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Regular fit