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Synthetic that steals the best properties of down.

Its lightweight loft makes you think The North Face ThermoBall Full-Zip Jacket is a down jacket, but it's actually synthetic. The Primaloft Thermoball insulation acts and even looks like down insulation, providing lofty warmth equivalent to 600-fill down. It even compresses like down jackets so you can stow it in its pocket and take it with you on backpacking or climbing excursions. But because it's synthetic, the ThermoBall stays warm even when you get wet during backcountry ski sessions through powder.

The ThermoBall features a durable nylon shell that slides under other layers with ease. Its cuffs have an elastic binding to keep the sleeves from riding up your arms. A hem cinch cord tightens to prevent breezes from blowing up your body, and two hand pockets keep your hands warm when you reach the top of the mountain. 

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The North Face ThermoBall Full-Zip Insulated Jacket - Men's

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Here's what others have to say...

Hi, Im 6'3" and 160lbs. What would be my the best fit for me? I think a medium looking at the size and fit.

Responded on

Hey James,

At your height and weight, I'd avoid getting a Thermoball since the fit won't be on par for your build.

Shoot me an email anytime you have questions!

Jared D.
Expert Gearhead

5 5

Great under-layer

  • Familiarity: I've used it several times
  • Fit: Runs large
  • Height: 6' 2"
    Weight: 210 lbs
    Size Purchased: XL

I wanted this to wear under my thin rain coats when its moderately cold in the North West wet winters. I originally bought an XL which was too baggy. My wife immediately commented that she thought it was too baggy as an outerlayer. I'm solidly an XL and am a bit overweight so going down to a L was uncharted territory. The large fit perfectly. The thermopuff is pretty thin and works exactly how I wanted it.
There is something about the wrist cuffs that I like, the elastic is set about an inch back so it feels better and you don't feel like a marshmellow about to explode.

One thing I would mention is that I don't think its super warm for lower than 40degrees on its own.

A medium good for me, being 5'8" 155? Buying as a second layer on top of base, under shell for snowboarding. Also can anyone give a size reference when packed, will be tossing in my pack for winter hikes.

Responded on

A medium is probably a good size for you, especially as a second layer. Slightly smaller than a nalgene bottle when packed into its pocket. However, you can still compress it a lot more; so if you need it to occupy an even smaller space, you can make that happen.

5 5

Tough to beat!

  • Familiarity: I've put it through the wringer
  • Fit: Runs small

This is a tough jacket to beat!

Its warm, durable, packable! Perfect middle layer piece! I am 5 ft 10 inches and 165lbs. So this jacket fits me perfect in a large! If anyone is over 5 ft 10 inches. I would recommend going with a XL!

I'm looking at a middle layer for layering. I'm 6' tall and weigh about 235. Just wondering if this would layer well under my Columbia rain jacket.

Responded on

This would be a great mid layer to fit under a rain jacket or a ski jacket. It is very light, warm, and low profile. Take a look at the sizing chart to find the best suited size for you

4 5

Warm, lofty, boxy.

  • Familiarity: I've used it several times
  • Fit: Runs large

I work for TNF and got this jacket for free (yay!). I am writing this review to offer a slightly different perspective on the jacket than what seems to be the consensus (mostly 5-star reviews). I am 6' 5'', 190 lbs. I have a long torso and long arms. I chose a Large. I rate this as a 4/5 because of the abnormally boxy fit (for the men's version, at least).

The Good

Let's start with warmth: this is a warm jacket, especially with a fleece underneath. I have the Patagonia Nano Puff hoodie, and the Thermoball is warmer. It is also loftier--but at the expense of taking up slightly more space. It is not meant to break the wind, but it does a good job nonetheless. And, even if wet, the jacket retains its warmth and its loft. This is the main benefit compared with a down jacket (such as the Quince).

This jacket is very compressible. As everyone knows, you can pack it down into its own pocket. This saves space in the pack and can even serve as a pillow under the sleeping bag or on an airplane. An 800-fill down jacket at a slightly higher price point will compress more than the Thermoball, but considering the trade-off of capability in wet weather, I like Thermoball.


Now for the knocks. First, the zippers. They get caught easily. Maybe I need some more time to break it in, but it's frustrating to constantly have to use two hands to open up the pockets.

The fit is VERY boxy. I have had numerous customers try on several versions of the jacket and all seem to fit different. However, the all seem to run boxy. The women's version is fitted, but the men's is built better for a broader framed individual. This is not a totally bad thing, as it is easy to accommodate layers underneath.

Still, it results in a boxy fit that can look awkward on a slim individual. This is particularly evident with the sleeves. If it stand normally, the sleeves are fine. If I reach forward, the sleeves roll far back past my wrists. This will be a pain with gloves in the cold weather. The Patagonia Nano Puff is much better in this regard.

I have heard this same thing from many people who own the jacket. Bottom line: warm in the wet weather, compressible, cheaper than down, room to layer, but with a boxy fit.

How's the breathability on this jacket (say as compared to fleece or down)? Looking at it as a midlayer for skiing.

Best Answer Responded on

Not bad. It's not waterproof, so that allows your body to breath better than other materials. For skiing you would be just fine. High-exertion activities will make you sweat a bit more--especially in warmer temps. But, if you get too warm, you can take it off and stuff it (literally) in your pack with no worries.

5 5


  • Familiarity: I've used it several times
  • Fit: Runs large

The North Face Thermoball Jacket is an awesome choice for a synthetic down jacket. I was very impressed with the high warmth-to-weight ratio and small compression size. This jacket is a great choice for layering on those frigid days on the slopes and ballin when cruising the town on a night out. I found the jacket to run a bit large.

5 5

Thumbs up, around town or outdoors

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

A weeks use has left me very pleased with it's adaptation to heat retention needs. I can travel in the car, use it as a base layer while skiing or be out around town and be comfortable. I like its performance/athletic fit that provides a good fit without bulk that some other jackets have.

Hi, I'm 5'10" 160lbs , Chest:96CM , Waist:81CM, Size S OR M?Thanks

Responded on

I am 5'10" 155 lbs, and the small was perfect. I suspect that's the one you'd want.

Is this Jacket the one included with the Men's TNF Thermoball Triclimate Insulated Jacket ?

Responded on

I tried it on at a local store and it seemed the same.

Responded on

Same material. However, the Thermoball Jacket is not zip-in compatible. That shouldn't matter with proper layering, though.

5 5


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

I absolutely love my Thermoball Jacket! It's super warm, yet incredibly light, making it a go-to choice in my winter-weather arsenal. I just took a trip back to the frozen North (i.e. Wisconsin) and put this thing to the test with nighttime temps dipping into the single digits. It performed admirably, keeping me toasty with a midweight sweater underneath.

The cool thing is you can rock this jacket with a tee underneath when it's warmer outside or layer a hoodie or sweater when it's colder, making it ideal for a wide range of wintry conditions. Oh, it also looks super sweet, drawing curious onlookers to ask questions, such as "where'd you pick this up?"

5 5

The hype is real

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

The thermoball is my daily jacket, its perfect for weather in the 40-20 range. When it gets down to the 20 range you will for sure want to layer it either over the top with a shell or under with a hoodie. Tons of compliments and fits true to size. It is amazing how light and warm this jacket is. The thermoball is very close to the warmth of my 600 fill down jackets but it also seems to have the ability to regulate your body temp better than traditional down.

I am looking for a mid-layer. I live in Edmonton, Canada, and it gets pretty cold here. I want the jacket for daily use, skiing, and hiking. I current have my arcteryx alpha LT (size large)as a shell. Do you think this would work as a mid-layer? If not can you recommend another jacket?
PS very user friendly website

Best Answer Responded on

Hey Joe
Whether or not this jacket will meet your needs really depends on what you plan on using it for. I don't think there is such thing as a one size fits all / perfect for every condition jacket. That being said, I was impressed by how warm the thermoball is for as light as the jacket is. This isn't going to be a severe weather jacket. If you're wanting something to insulate on the coldest days, I would look for something else - I recommend looking at the Arcteryx Cerium or Thorium (again, depending on needs).

Detailed photo of sleeve cuff!

Detailed photo of sleeve cuff!

Sleeve cuff sits in the sleeve about an inch, which is a nice feature for overlapping a glove etc.. Little was a little harsh!

5 5

So far so good!

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

I would classify myself a person who prefers down to synthetic, but synthetic does have the upper hand when it comes to H2O. The Weight usually favors down more than synthetic, but the Thermoball is light so it is very comparative in that aspect. While the Thermoball packs down pretty small it doesn't get as compact as my other down jackets, but that is an easy aspect to overlook. Warmth is right up there with down jackets, but I have yet to test the Thermoball in as cold of temps I would normally wear my down for. Other than that I feel like this is a solid option for someone who stands the chance of their jacket coming in contact with moisture (rain/ snow/ sweat etc..), and also wants to save a few bucks.
There are advantages to both down and synthetic, what it comes down to at the end of the day is does the item perform for you in the weather you are using it? So far my answer to that question would be a yes.

Fits true to size, I am 6'2" and the XL sleeve length is spot on. The jacket is not supper snug so that allows a little room to trap dead air which is warm air. The sleeve cuff is in about an inch inside the sleeve so the sleeve overlaps a glove. This to me is a great feature.
I bought the Rage Red, the photo makes it look a little shinny, I thought it was going to be over the top bright, but its actually a very nice dark red. Will post a pic.

Responded on

I typically wear 37" dress shirt sleeves. I thought the XL arm felt fine in the store. But short w/ a baselayer and shell at home. If i extended my arms out and put them back down, there seemed to be an inch+ of baselayer that wasn't insulated anymore.

5 5

Warm and Light

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

There is so much that I love about this jacket. It functional in the backcountry yet nice enough to wear everyday, it is light and packs into it own pocket, and it keeps me as warm as my large NF Catalyst down jacket but half the size. It is now my go to jacket. Also I love the colors. I get tons of compliments every time I wear my Thermoball jacket.

Warm and Light

Where is TECH SPECS for this jacket?

Best Answer Responded on

Awesomeness! :) here are the specs:

Fabric:15D 33 g ThermoBall™—100% nylon insulation Avg Weight:350 g (12.34 oz)
Length from Center Back:28”
Guarantee:Lifetime Warranty

You can find them here:

5 5

Super light and silky

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

I absolutely love the new ThermoBall jacket. I got it primarily as a light and easily compressible layer to carry backpacking. But it has yet to ride inside the pack, heh. I am wearing it to work and everywhere, because it is warm, but has a nice temp range I remain comfortable in. The feel is silky smooth, and unbelievably light weight.

I highly recommend this jacket. I may just get another for my nephew