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It's simple and sleek, and yet you may find that with its silky softness and lightweight warmth you don't want to go anywhere without the Rab Xenon Insulated Jacket. But with water-and wind-resistance and breathability, it makes sense. Good thing it also stuffs nicely into its pocket.

  • Pertex Quantum GL exterior and lining is überlight, super-soft, wind-resistant, and breathable
  • Primaloft One provides toasty-warm insulation that's fast-drying, breathable, compressible, and and wind- and water-resistant
  • Slim fit is cut close to the body for optimal performance
  • Lycra-bound attached hood fits under your helmet, allows comfortable mobility, keeps head and neck warm, and rolls and clips down when not in use
  • Weighs a mere 12 ounces, making it eminently packable
  • Hem drawcord seals out the elements
  • Zippered chest and 2 hand pockets secure essentials
  • Zippered chest pocket doubles as a handy stuff sack

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Here's what others have to say...


Great lightweight jacket

  • Familiarity:I've put it through the wringer
  • Fit:True to size

Superb jacket.

Slim fit.

Pertex material blocks all wind, zipper blocks 90% of wind.

Wearing a tshirt, R1, and this jacket I am very comfortable down to temps in the low 20's/ high teens.

Compacts into chest pocket.

Sleeves fit my long arms well .

hi, can you help pick between this jacket...

hi, can you help pick between this jacket and the patagonia nano puff?

Best Answer


The Patagonia Nano Puff and Rab Xenon are very similar jackets with the same amount of PrimaLoft synthetic fill. The Rab is going to have a slimmer fit while the Patagonia will be more boxy. Additionally, the Rab has a tighter fitting hood to seal out weather, though the Patagonia's hood fits easier over a climbing helmet.They both have the same amount of pockets, but the Rab will have an external chest pocket, while the Patagonia is internal (both allow the jacket to be stuffed into the chest pocket). The Rab jacket is 2 oz lighter than the Patagonia and has a more durable and thought to be more water repellent shell than the Patagonia. Stylistically, the Rab is a cleaner look and the Patagonia is a more stylish baffled-design.


weightless warmth

  • Gender:Male
  • Familiarity:I've used it several times

A question was raised about the Xenon compared to the Arc'Teryx Atom SV. As noted, this is a lighter jacket, closer to the Atom LT or Patagonia's Nano Puff Hoody. Weightless (my XL is 13 oz on my scale), packs down to nothing. Sleeves are long, the hood is small - won't fit over a helmet but is a good head fit. I got it for warmth on backpacking or rock climbing trips, so small hood is OK. And it takes up little space in a cycling pack. Pertex Quantum shell is amazing. The stuff is so light it's almost translucent, yet it shrugs off wind, snow, sleet, some rain... More pockets than I expected, given the light weight - 2 handwarmers and a Napoleon chest pocket. I would have liked an interior pocket, but no mind. Easily-worked bottom hem drawcord.

I like this jacket a lot. I've been wearing it for the cold days we've had this winter, and will be taking it on spring backpacking trips in a couple months.

How does this jacket compare to the Arc'teryx...

How does this jacket compare to the Arc'teryx Atom SV for insulation/ warmth?


The Xenon Insulated Jacket is a lighter-weight synthetic puffy with 60g of PrimaLoft insulation. The fabric is also extremely lightweight, bringing the total weight to 12 oz. The Arcteryx Atom SV Hooded Insulated Jacket has 100g of Arcteryx's proprietary CoreLoft and has a heavier outer material, so definitely warmer. This makes the jacket softer to the touch and slightly more durable, though heavier at 16.8 oz. The Xenon would be more comparable to the Atom LT Hoody which also has 60g of CoreLoft.