Strength against the odds.
The Rab Men's Positron Down Jacket is a force field against freezing days. With 10 ounces of 800-fill Nikwax hyrophobic goose down and water-resistant Pertex Endurance face fabric, this strong winter jacket is perfect for high-altitude adventures. Sewn together with durable nylon lining and stitch-through sides and arms, the Positron is flexible and breathable for a comfortable fit on the groomers or in the backcountry.
Normally, water is a down jacket’s arch nemesis, but thanks to the hydrophobic down treatment in the Positron Down Jacket, it takes the stress away from cold and wet weather. To ensure that you stay as warm as possible, the torso and hood have boxwall baffles that keep the down in the right places without excessive stitching so your body heat never escapes. This jacket also has security and hand zip pockets for convenience on the go and a helmet-compatible hood for intense days on the mountains.
- Pertex Endurance face fabric
- Nylon lining
- DWR coating
- Nikwax hyrophobic goose down insulation
- Boxwall torso and hood
- Stitch-through sides and arms
- Helmet-compatible hood
- Q & A
Amazing Jacket...annoying zippers!!!
- Fit: True to size
- Size Bought: S
First off, this jacket is toasty! This will be my second ever purchase of a down jacket. I bought this for a good winter camping/hiking jacket and although i haven't been able to take it out yet i can tell this will be a great buy. Compared to my Columbia Platinum Plus 860 TurboDown this thing blows it out of the water wearing it around the house. The fit is good for me. At 5'8'' 123lbs its a bit big in the arms but good room for additional layers. The length is good and sits about 5 inches below where i wear my belt. Im not big on black clothing however this has a good graphite color to it. In the sun it has a greyish shean to it. It also comes with a nice stuff sack for your pack.
There is only one con that i can think of. The zippers are annoying. The main zipper gets hung up either by grabbing the internal fabric or getting stuck on the tracks. With a jacket costing 400$+ this is absolutely unacceptable. Also, the zipper is on the wrong side.
The zipper works fine now!
- Familiarity: I've put it through the wringer
- Fit: True to size
I'm amending my prior review. It's now January of 2017. I tried a few other jackets after returning this coat because of the zipper problem and nothing else I could find compared with this amazing jacket.
I contacted Rab and discovered the trick to zipping this jacket easily almost every time. On the right hand side of the zipper there's a small tab built into the jacket and you can pull down on that tab which assists you in seating the zipper properly. Now I rarealy have problems zipping this jacket. I purchased another jacket and absolutely love it. Don't hesitate to try this amazingly warm and functional down jacket from Rab.
I wrote the first review for this jacket. I still love the coat. Its the best winter cold weather coat I've found. However the zipper problems make this jacket an untenable winter jacket.
I returned the first coat thinking it must have been a fluke. The second coat had the exact same problems. I even asked some friends to try it out to see if they could zip it up. Everyone had the same problems. It takes multiple attempts to get the zipper to function properly.
I wish someone at Backcountry would contact the people at Rab and let them know that this fantastic jacket has a major flaw in the zipper and they need to fix it.
When they do fix it I'll buy another Rab Positron coat.
Sleeves could be better
- Familiarity: I've used it several times
- Fit: Runs small
- Size Bought: XL
Many great features and nice construction of good materials, but the jacket falls short of 5 stars because of wimpy sleeves. High winds and minus temperatures...my arms get a bit cold. I don't understand why Rab didn't address this for a jacket that is supposed to be the next level up from the Neutrino. It's like they keep adding stuffing to the chest (extreme example of this: Rab's Andes coat) but leave the sleeves skimpy. Now, I know they want good arm mobility for true climbers, but I can't help feel that the stitch-through construction of the sleeves and less fill was driven by value rather than technical motives. Warmer sleeves would still allow good movement with the right geometry.
All that said, I do like the jacket for all but the coldest conditions. Hence 4 stars. The large was too tight on my chest, though I am normally size large in all items. XL worked well.
Astounding down coat
- Familiarity: I've used it several times
- Fit: True to size
- Size Bought: Large
I've been on the hunt for the perfect cold weather down coat for most of three decades. Numerous coats have come along from heavy Arctic style down coats with coyote fur, to light versions used in layering. I had about given up on finding the perfect coat until the Rab Positron arrived in the mail.
What feature is missing? I can't find one. It's so extraordinarily warm that I have to shed other layers on all but the absolute coldest outings becaus this thing is an oven. I run cold and typically have a hard time staying warm. I'm 6 ft and 160 lbs and a large was perfect with room to layer. It's also a great fit with just a henly and flannel under the coat. The deep cavernous pockets are a dream come true to warm up your hands and accommodate large gloves or mits easily. The hood is surprisingly warm and easy to adjust.
If there's one thing I could wish to see improved its the zipper. The thing is backwards and difficult to operate for a right handed user and has taken some getting used to. At first I had lots of trouble with the zipper but I'm learning to overcome that difficulty.
The coat is incredibly pack able and has relegated several other go-to coats to the back of the closet. If all the othe Rab coats are made with this same attention to detail and construction then they have really set a new benchmark in the down coat world.
I couldn't be more happy. I only wish I had crossed paths with this amazing price of winter gear 10 years earlier and it would have saved me lots of money and time searching for a perfect cold weather coat.
Anything above 30 degrees is just too warm to wear this thing. You'll cook and that's coming from a person that struggles to stay warm. Below 30 and down to single digits it's been a dream come true. I haven't been into the below zero weather yet to test it but this weekend I hope to find some really cold temps to test it out.
This coat sheds water beautifully. It seems to be windproof, and with layers I'm sure it's good way down below zero.
Hats off to Rab for a fantastic winter garment. You won't be disappointed.
Positron is slightly more expensive than Neutrino Endurance Jacket. Only difference I see is an extra 1 oz down. Is that the extent of it?
Would this jacket be good enough for Denali? It succeeded Rab Neutrino plus. It has a box-wall construction on torso, back and hood but unlike Neutrino Plus it has stitch-through construction on sides and arms?
I own this jacket and like it. But, the sleeves are under designed. It's like a phenomenal down vest married to the arms of a down sweater. When the wind howls and the temps are well in the minuses, I feel it in the arms. So, I would say it's not for Denali. It's probably great for the UK's worst climbing conditions (Rab is a British company), but not the Alps' or North America's. With better sleeves it would be 5 star. FYI, I found the size runs a bit small. I am usually large, but the chest was tight. XL worked well.
I second the issue with sizing. I ordered the men's medium and felt it was too tight in the chest/arm pits, so I sent it back. The large would have probably been the ticket, but I decided to spend the money on an unexpected cost of home repair. I also agree with Paul's assessment on the arms. Why on Earth would they not box-baffle the arms and categorize this jacket for high, alpine climbing? For lower-elevation climbing, cragging, multi-pitch below 10,000 ft, there aren't many jackets that match the Positron. It'd probably make a superior around town jacket as well.
I purchased this jacket and it fits great over many layers including Atom LT hoody. I'm going to use it for winter ascent of Mount Rainier as my only concern with it right now is Denali 17K camp. I believe previous version of MH Nilas had stitch-through arms and have been used on Denali and Rab Positron is somewhat comparable. Unlike MH Nilas or even Rab Nautrino this jacket has twice as many stitched-through baffles on arms which does concern me. Indeed, what were they thinking?
I'm 5'10" and 155 lbs with longish arms. Would a Medium be ok for me if i wanted to add a layer or two on occasion? thanks
Hard to say about the specific arm length without trying it on, but I'm almost exactly that size and I wear a medium in everything.
I am normally large in everything but found that size too tight in the chest on the Positron. XL worked well.
I'm 5'11 170lb with long arms and I found US M fine over many layers including Atom LT hoody.