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From multi-pitch rock routes to quick alpine dashes, zip up the soft and stretchy Rab Men's Zephyr Jacket. Strategically placed Matrix fabrics trap in warmth and shield you from the elements while the slim fit and generous fabric stretch allow you to move with maximum agility and precision over steep rock. Plus, the Polygiene odor control treatment keeps you from smelling like a yeti at the end of the day.

  • Matrix DWS fabric in the shoulders and upper sleeves is durable, wind resistant, and has a DWR finish for reliable wet-weather protection
  • Matrix SWS fabric in the body and hood provides warmth, wind resistance, and generous fabric stretch
  • Slim fit with generous fabric stretch is ideal for fast-and-light alpine pursuits
  • Snug-fitting under-the-helmet hood adds warmth
  • Thumbloops prevent sleeves from riding up
  • 50+ UPF rating protects you from harsh alpine sunlight
  • Polygiene Stay Fresh odor control treatment keeps the man stink away
  • Front A-line zippered pockets work when you're wearing a harness or pack
  • Reviews
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Rab Matrix Fabrics

The Matrix range of fabrics is a family of softshell fabrics specially chosen by Rab for their unique performance qualities.

Here at Rab we use Matrix DWS (Double Weave Stretch), SWS (Single Weave Stretch) and SW (Single Weave) across a range of our legwear and light-weight products.

Great fit, poor drying time

  • Familiarity:I've used it several times
  • Fit:True to size

I really wanted to love this piece, but sadly it fell short in two areas. First off I'll start with the good:

Perfect athletic fit. I'm 5'8" and 160-165 and it is size perfectly to fit over a base layer to light insulator (think R1 or the like). The hood is absolutely fantastic, when zipped up it does not flap in the wind, no need for drawcords and perfect visibility.

With the spandex weave it moves well with your body. The single weave fabric on the body blocks just the right amount of wind when you are active, note it DOES let some through. For activities like ski touring, mountaineering, or alpine climbing in warmer weather it strikes a good balance.

The bad:

The high spandex content and poly makes for much longer drying time when the body does wet out. There is no DWR on the main body either, so if used while it is snowing your body heat can melt the snow and fabric soaks up the water like a sponge. I originally purchased this for ski touring and mountaineering, but found that it if it was snowing at all it would wet out. As for the long drying time, when you sweat it does transfer moisture well, but if you're wearing a pack it will wet out. Yes it's best to de-layer, but some times that isn't an option if you're moving through an area with objective hazard. When it does wet out from sweat or precip it simply takes forever to dry. I will frequently wear a thick puffy while transitioning or eating, but even with one over the top the zephyr would rarely dry by the end of lunch break. This made it useless for me on multi-day trips, I need to know that my layers will dry out.

I ended up returning the zephyr and going with a westcomb crest made out of pertex equilibrium (unique nylon weave). It blocks a similar amount of wind, is half the weight, breathes just as well and dries MUCH faster. Downside is that the cut is not nearly as well fitted as the zephyr (althrough crest hood does go over a helmet).

Great fit, poor drying time

A note on my rating, if you are looking for something to wear on crag sessions or "done in a day" alpine climbs, with no chance of precip, this could work well. Note it won't block all wind, so it could get cold at belays. The DWS of the arms seems reasonably abrasion resistant. If you're doing overnight trips or winter climbs I wouldn't recommend it.

Very lightweight and somewhat warm

  • Familiarity:I've used it several times
  • Fit:True to size

I use this jacket for hiking, running, dog walks etc. It's great when I am worried I might get cold, or need to warm up before shedding some layers. It's light enough to compress into it's own pocket, but the zipper isn't set up for it (just so you know). I'd give it a higher rating, but I do wish it were warmer and I really wish the zipper did work to stuff it into itself.

Great jacket to cut the wind

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

This is a great product that I am surprised is not copied by other manufacturers. It is thin, light, and soft. Cuts the wind and blocks the sun. Great for ski mountaineering during long uphill slogs to vent sweat while cutting the wind and protecting you from the sun. I no longer carry a balaclava thanks to the built in hood. In very warm conditions, I wear it over a t-shirt for sun and wind protection, then add another layer to ski back down. This jacket has become a skiing and climbing essential.


  • Familiarity:I've used it several times
  • Fit:True to size

6'4", 220 pounds. XL fits perfectly, mostly because the sleeves are longer to accommodate the thumb holes. Perfect light precip shedding piece for when it's a bit too cold for a t-shirt in the mtns. Wore it after it got dark this weekend the descent from Mt. Buckner in the North Cascades, WA.