Rab Nimbus Jacket Women's


RRP: £150.00
FROM: £130.52 (£108.77 ex VAT)

You Save 12%


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Womens Synthetic Down

Rab's Nimbus jacket has some great features, it is more than just a fabulous cut! *pictures don't do it justice*

The jacket packs down small as Cirrus is highly compressible, and quite light weight making it great for stuffing in a bag when you're on the go.

Packs into its own pocket, with a nifty little loop to clip onto your harness or bag. The helmet compatible hood makes it divers, and the strong, soft cuff sleeves create a luxurious feel. This jacket has two hand pockets and an internal stash pocket.

The outer shell is made of Pertex Quantum, which gives it a water resistant finish, combined with the water-repelling properties of the Cirrus insulation it can take a light shower and still keep you warm!! BUT....it also dries really quickly unlike down, as it doesn't have anything that absorbs the water, again keeping you warm and toasty in the "Good old British weather".

The easy care of this garment also "Top Trumps" down as you can just chuck it in the was with a bit of technical detergent, and let it dry!! Nice and easy!!! We do however recommend that every now and again you chuck it in the tumble dryer on a low heat, to reactivate the DWR coating.

What is Cirrus?

Cirrus is synthetic down made from 3M Featherless Insulation this is equivalent to approx 600 US Fill Power of down. So it still has a good weight to warmth ratio...not quite as good as down, but you do have the weather resistant properties that down doesn't.

We have the Marmot Solus Jacket which is the next level up from this in warmth 3M Featherless to 3M Featherless Thinsulate and that's around 700 Fill Power. If you are after something a little less warm the Rab Altus Jacket has 12g less fill.

Cirrus is in fact looks like really technical fluffy cotton wool. By having lots of fluffy bits around it to trap air like feathers do, this enables the insulation to trap the air and warm it through your body heat, just like down. It's not quite as fluffy as down and isn't as light as down, but it is a massive step in technology to get the ultimate British insulated jacket!

This is the image of Cirrus 3M Featherless Insulation, and you can see all the gaps that trap the air:


  • Weight: 390g/13.7oz (estimate)
  • Pertex Quantum® outer fabric
  • 100% Nylon lining
  • Cirrus™ powered by 3M Featherless insulation (178g/ 6.3oz in size 12)
  • Stitch through mini baffles
  • Over or under helmet hood with lycra binding
  • YKK® VISLON® front zip, internal insulated baffle, chin guard
  • 2 YKK® zipped hand-warmer pockets
  • left side doubles as integrated stuff sack
  • 1 YKK® internal zipped pocket
  • Lycra bound elasticated cuffs, hem drawcord


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