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M’s Kooshin detail

Model 6' 170 lbs wearing size M

M's Kooshin

$199 USD

Price if Sold in Traditional Retail Model: $299.00

43211 9 reviews
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INSULATION THAT LET'S YOU MOVE

The Kooshin Jacket’s revolutionary 3DeFX+ construction is so incredibly warm, comfortable and stretchy you’ll never want to take off, and it’s so breathable that you won’t have to. The Kooshin jacket’s ability to go from fast-paced outdoor activities to chilled-out comfort makes it the best kind of oxymoron, like a trail-savvy cattle dog with the temperament of a baby manatee.

This is portable warmth that allows you to be active.  

IDEAL FOR: MOUNTAIN LIFE, CAMPING, CLIMBING, BIKING, WHEN YOU NEED TO STAY WARM WHILE BEING ACTIVE

3Defx+®

The Future of Synthetic Insulation

3DeFX+® is engineered to adapt to your body and give you unmatched flexibility, freedom & comfort

* compared to other leading synthetic insulators
CONSTRUCTION
THE DETAILS
M’s Kooshin features
FEATURES
  • 3DeFX+
    • Stretch-woven ripstop shell fabric
    • Breathable and stretchy insulation
    • Stretch-woven inner lining
    • Strategic quilting keeps insulation in place
  • Zip handwarmer pockets
  • Zip chest pocket
  • High draft-cutting collar
  • Hidden elastic cuffs 

3DeFX+ Insulation

The innovative secret behind the Kooshin’s performance is 3DeFX+: a three-layer sandwich of breathable, stretchy shell and liner fabrics, surrounding three-dimensional stretch synthetic insulation. 

Fill
4-Way Stretch Polyester Insulation

3deFX+ is composed of four types of spiraling, hollow-core polyester yarns. This unique formulation provides lightweight, lofty insulation with incredible flexibility and stretchability. 

Shell
Stretch Woven Nylon

The shell on our 3deFX+ garments is a durable stretch woven nylon with a ripstop weave. It's left open, without the cire finish or acrylic coating found on traditional insulated jackets. This keeps the fabric supple, silent, and stretchy. We add a C6 DWR finish to repel moisture. 

Liner
Stretch Woven Nylon

The 3deFX+ liner fabric is a plain weave nylon with an incredibly soft and stretchy hand. The smooth finish glides over your baselayer or feels incredible next-to-skin. There is no quilting on the liner so it retains maxmimum strechability with your body's movements. 

PRODUCT REVIEWS

43211

REVIEWED BY 9 PEOPLE

54321

I got this jacket as an alternative to another fleece, and with one winter/spring of use, I can say I love it. I have worn it as a midlayer when skiing in cold conditions, as an around town casual jacket, and as an outer layer during spring hikes. It seems to me that it is slightly warmer than a fleece, which may be partially because it is somewhat less breathable (though it does have some breathability). The reduced air flow compared to fleece is fine with me, because I like to keep the wind out when it's cold. The only potential caution I could offer is that the outer layer is very thin and seems like it would snag or tear easily. This is no doubt a design choice to make the jacket breathable, but it makes me cautious in the woods. If I were venturing off the trail, I would definitely put a more rugged layer over it. All features have trade offs, though, so the lightweight outer layer can't really be considered a negative. Overall, the Kooshin is an excellent, versatile jacket.

Written by K, Eastern US on October 23, 2016 at 4:29 pm

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4/10 people liked this review

54321

Comfy and keeps me at perfect temp, ultimate comment from son..."dad, that is a cool coat"

Written by Dave, Connecticut on April 3, 2016 at 1:21 pm

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1/2 people liked this review

54321

The Koosh works great for cold temps under a shell. I generally just wear my long underwear, this, and my shell. Nice and stretchy, not restrictive, and very light. Really a perfect mid layer. My only complaint is that the chest pocket is hard to operate sometimes, gets stuck - but not a big deal. I came here looking for weight as well as I thought of carrying this on a backpacking trip and counldn't find the weight so I got out my kitchen scale. My size L weighs in at 15.4 ounces. Thanks Trew for another great product!

Written by Ben, Michigan on March 3, 2016 at 5:58 pm

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9/18 people liked this review

54321

Being a patroler Snow King you need the warmest and most durable gear to endure the coldest and harshest terrain. The Koosh Jacket far exceeds expectations. The strong and flexible exterior helps repel moisture when handling patients, belaying toboggans, and carrying out day to day tasks. The warmth that this jacket provides is more than adequate for the -10 to 20 degree days in the norther facing hill of Jackson, Wyoming. On race days there is a lot of standing and observing so movement is next to none existent. At -10 with my Patrol vest I can out watch most of the parents and fans! The Koosh Jacket as is perfect for hanging out by a Back country fire and having a few.... SODA's! TREW has yet to disappoint with their ongoing quest to better gear performance! The Koosh is an excellent addition to anyone's insulation arsenal!

Written by Matt DeKens, Snow King Mountain Resort on February 7, 2016 at 1:51 pm

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1/2 people liked this review

54321

I bought this jacket for insulation under my ski shell but find myself wearing it almost every day around town. It's far more breathable than my Patagonia Nano Puff so I'm able to wear it in a wider range of temperatures. The outer material dries surprisingly quickly, making it great for wet days or long tours. I really like how stretchy material does not limit movement while skiing, but because the material gives a little, the zippers tend to get stuck more often than I'd like. Otherwise no complaints. If you're looking for a lightweight, super versatile mid-layer, this is the best value I've seen.

Written by Adam Lewis, Portland, OR on January 20, 2016 at 12:09 pm

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1/2 people liked this review

14321

Managed to take the jacket out on a few ski/BC hiking trips. I am 5'10", 220 lbs, wear XL. I wore the jacket over a thin thermal shirt in 17 degree weather one AM in Bishop without a problem. The jacket seems warmer than its mid weight insulation classification would seem to suggest. Hiking at altitude in windless 24 degree weather, it quickly became too warm (over a midweight thermal shirt) and had to come off after 15 minutes of exertion. I can easily ski in it (over a heavy weight thermal shirt) on most non storm days; it would suffice on stormier days under a long hemmed shell and full chest high bib. With regard to its claimed ability to be worn over a wide range of temperatures, I have only noticed that on the warmer side of things where I don't want to bother taking it off; at colder temps as noted above, it gets too warm. Compared to its Patagonia Nano Air competitor (same XL size), it is slightly roomier for me as I could accommodate a thin underlayer. Hand pockets are about the same size, chest pocket on the Nano noticeably smaller. The Nano fits tighter on me. Only quibble with the Trew product is the chest pocket. The manner in which the pocket fabric is folded and pleated to be somewhat recessed causes frequent zipper binding; I did not have this problem with the hand pockets. An excellent garment for everything but belay jacket territory.

Written by Van, Los Angeles CA on January 5, 2016 at 12:19 pm

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1/2 people liked this review

Written by Van on January 5, 2016 at 12:19 pm

Outdated browser would only permit selection of the one. Apologies.  Worth four!

Written by Van on January 5, 2016 at 12:19 pm

WTF. One star?

Written by Craig on January 5, 2016 at 12:19 pm

So why only one Star?

54321

How much does it weigh?

Written by d, NY on January 5, 2016 at 8:35 am

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0/1 people liked this review

54321

The Kooshin jacket is kooshtastic! It is one of those put it on and leave it on type pieces. Or role it up and use it as a pillow while sleeping in my van - it's just so soft and kooshy. It is warm enough to wear around town as a jacket yet I don't get too hot wearing it indoors either. It is also the first insulated mid layer I have worn under my shell that I don't overheat in, which means it acts as a perfect mid layer on those chilly days. The stretch is nice for when I am shredding it moves well with my body and the sleeves don't pinch up. Fit is on the money for a jacket/mid layer, I am 6'4 210 and wear an XL. Not too big, not too tight. Can't beat the quality and tech for the price tag- that's for sure! Can't wait to see what they come out with next.

Written by JohnnyFrontPage, Chicago, IL on December 27, 2015 at 4:02 pm

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1/2 people liked this review

54321

I've been getting Trew midlayers/ soft shells almost every year since they first started making them. And every time I get one I say "this is the best soft shell I've ever owned!!" I didn't know I needed one until I got one and now I wear them all the time for anything and everything. Well Trew has done it again!! The Kooshkin is a perfect, stylish, extra comfy and toasty midlayer for the mountain or around town. Steve Jobs revolutionized the world with the iPod now Trew is doing it with outerwear. Good work fellas!!

Written by RCP360, Carbondale, CO on December 18, 2015 at 5:31 pm

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1/2 people liked this review

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