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Will Renwick tests out Rab’s latest synthetic insulated jacket

I’ve been really impressed by this jacket by Rab. It’s incredibly comfortable plus it’s a very efficient insulator.

It’s filled with PrimaLoft’s Gold Active synthetic fill. This is supposed to be more breathable than standard PrimaLoft Gold and therefore better suited to higher tempos. I’ve certainly found it breathable enough, and the Pertex shell also makes it windproof as well.

The most impressive thing about the Xenon X is its warmth-to-weight. You’d think it’s a down fill as it’s lightweight at 355g and feels very lofty, plus it’s very packable.

The handwarmer pockets have a comfortable lining, they insulate well and they’re large enough to fit a map, so is the zipped chest pocket which also doubles as the jacket’s stuff sack.

The hem can be adjusted by a drawcord while the cuffs are elasticated but hold well. The hood is also elasticated and it has a snug fit as it’s designed to be worn underneath a helmet.

I’m a size medium and I found the fit of this fairly baggy but I could still wear it comfortably under a waterproof shell.

I’ll be wearing this all winter.

Price: £160
Weight: 355g
Sizes: men XS-XXL, women 8-16