Shak Classic

# 624 | Men's
Signature dense Merino ponte full zip

  • Signature dense Merino ponte full zip


image loading...


The Ibex Promise
We’re committed to uncompromising craftsmanship and to your satisfaction. If you are unsatisfied for any reason, return your purchase within 60 days with proof of purchase to receive an exchange, repair, or refund. It's our promise.

Timeless Classic

The Shak Classic is the holy grail of training partners: reliable, tough, and guaranteed not to spill the beans about that time you forgot to pack the white gas for a three day trip. Made of 100% Merino, this jacket is top-notch insulation for all your wilderness endeavors. Bonus: its modern cut will perform just as well in the boardroom as it does in the backcountry.

Tech Specs +

 Semi-Fit Fit Guide
Wool Gauge:
 21 micron
Fabric Gram Weight:
 380 g/m2
Garment Weight:
 19.52 oz
Fiber Content:
 100% Merino Wool
Fiber Source:
 New Zealand
Fabric Source:
Garment Source:
 United States

Wool Type +


We start with the best New Zealand Merino wool to make a range of insulative yet breathable midlayers that outdoor enthusiasts swear by. This exclusive knit is square and dense, creating a rugged yet soft fabric with inherent stretch and long-wearing durability. Our Shak fabric is best used as a midlayer but is soft enough to wear as an expedition-weight baselayer and substantial enough to be used as an outerlayer in some conditions. No matter how you wear it, the performance is unbeatable. Machine washable.

It Starts With Free Range New Zealand Merino Sheep
It Starts With Free Range New Zealand Merino Sheep
Understanding the Micron
Understanding the Micron

Size & Fit Guide Expand +

How Do I Determine My Size?

We recommend a general body measurement guide to determine your size in Ibex clothing. This sizing chart is not garment specific, but in fact a body measurement chart. Here are some helpful hints when measuring:

Bust/Chest: relax arms at sides, keeping the tape parallel to the floor, measure the fullest part of your bust/chest
Waist: keeping the measuring tape comfortably loose, measure around your natural waistline
Hips: standing with heels together, keep the tape straight and parallel to the floor, measure around the fullest part of hips
Sleeve Length: a 3-point measurement, standing with arms relaxed and slightly bent at sides, measure from the base of the neck to the shoulder and then from the shoulder to the wrist bone, add together measurements
Form-fit: garment designed to fit snug to the body throughout
Semi-fit: garment will be contoured to the body
Regular-fit: garment will not be slim, but also not oversized
Relaxed-fit: garment drapes loosely on body

Still need help determining your size? Call 800.773.9647 or email us at for specific garment measurements.

Q&A and Reviews

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 4 questions Browse 4 questions and 62 answers
Why did you choose this?
Ibex Outdoor Clothing Store
I have one like this already
Tim L on Feb 6, 2016
chest pocket, heavyweight fabric, good value
Steve G on Feb 4, 2016
I have one like this already
Tim L on Feb 6, 2016
I own the Shak Classic in black. It is understated fashion that substitutes for a sports coat for business meetings, travel and long days in the office. I'm buying a different color just to mix it up.
Guest S on Feb 6, 2016
chest pocket, heavyweight fabric, good value
Steve G on Feb 4, 2016
cycling to work every day. great as outer layer for LA winters. i use a very light wind breaker on top on windy or rainy days.
bolívar i on Feb 3, 2016
Loved the two shak jerseys I purchased a year ago, but thought I'd go full zip for temp control, and different color.
Robert S on Feb 3, 2016
I love the shak Lite. I figure the shak classic willbe just as good
jacob s on Feb 2, 2016
I've owned a number of these sweaters and they are simply the best quality and fit I've ever hadâ??they are an outstanding piece. Highly recommended
Josh M on Feb 2, 2016
past experience, needed another color!
jon e on Feb 2, 2016
I have had a Shak ½ zip for many years (it was my first Ibex purchase) and it is wearing out after only a zillion trips through the washing machine (I've used Cold water, delicate cycle, Woolite and kept it out of the dryer- it has never had any significant shrinkage) Can't beat that kind of durability in a sweater that is very comfortable and works over a range of temperatures.
Tom on Jan 26, 2016
Returned it Looked Used
Thomas F on Jan 19, 2016
warm, lightweight, looks good
Michael L on Jan 16, 2016
Great fabric, comfy at work, home or play!
Jason S on Jan 8, 2016
Classic for under a shell as a layering piece.
R.J. H on Jan 8, 2016
ski mid layer + Nor Cal Winter jacket
Guest S on Jan 7, 2016
Looking for a go-anywhere piece that fits in at the office and around town.
Keith S on Dec 26, 2015
A recommendation from a biker friend who swears by this sweater as the best!
Guest S on Dec 16, 2015
Need a replacement. My husband has 3 of them and is wearing out the elbows.
Guest S on Dec 15, 2015
Looks like a wonderfully made garment to be given as a gift for a relative.
Guest S on Dec 14, 2015
It was on my son's Christmas list!
Guest S on Dec 14, 2015
Great reviews and styling/merino wool
jeff w on Dec 11, 2015
Again, warm but comfortable
angela d on Dec 10, 2015
I have one and I love it, and my dad always coveted it. So I bought him one!
Jennifer B on Dec 3, 2015
Everyone needs at least one Shak!
James S on Dec 3, 2015
perfect weight, good for office or chopping wood!
Austin L on Nov 30, 2015
usa company that manufactures in canada or us. no china crap, where everything (the materials) cost little, and the labor is slavery
Michael W on Nov 30, 2015
Ruggled and perfect for layering.
Craig J on Nov 29, 2015
Merino wool in style I think recipient will like.
Guest S on Nov 29, 2015
100% wool. Heavy weight.
mark b on Nov 27, 2015
I have the Shak Classic in blue. Bought this for my dad for xmas after he commented on how much he likes the jacket.
Eric W on Nov 27, 2015
I have several Shak Classic sweaters and love to wear them all fall and winter.
Steven H on Nov 24, 2015
have one for years and love it. Almost wore the old one out
Michael N on Nov 24, 2015
Great quality- we have several Shak items and they continue to keep us warm and look practically brand new after many years of use.
Marylee M on Nov 24, 2015
Have a half zip and love it.
Faith R on Nov 22, 2015
This is my husband's fav jacket - we have one in every color.
Molly M on Nov 10, 2015
Needed a medium layer for winter travel to the northeast.
JUSTUS S on Nov 8, 2015
It's wool and made in the USA
David L on Nov 1, 2015
I have one of these that is orange that I use for hiking during hunting season. With the old Scout style gone, I find this looks better on me than the new Scout style/colors.
Chuck L on Oct 29, 2015
The Shak classic is my favorite Ibex product....great versatility in that it can be worn indoors and out, depending on the weather!! I'm also lazy and love the full zipper front.
Pam on Oct 18, 2015
Purchased in the past for my sons. Great weight and warmth with being too bulky. Super soft!
Guest S on Oct 13, 2015
Best Jacket I have ever owned.
Benjamin H on Oct 11, 2015
Seemed like a staple, warm weather garment for my first Ibex purchase.
sebastian R on Oct 8, 2015
I have one of these already and liked it so much I wanted another.
Brendan N on Oct 6, 2015
I have had 4 of these over the last ten years and they are hands down the best sweater/jacket I've owned. Super comfortable and warm as a heavy base layer. I wear mine from fall to spring in the PNW and they hold up well.
Scott B on Sep 29, 2015
want to try for general warm layer
Bruce A on Sep 28, 2015
a gift
Lori W on Sep 27, 2015
Liked the first one I bought.
Guest S on Sep 27, 2015
Had s Shak previously - wore it to it's death. It held up terrific - but I did not take it off. Would have liked to have seen a grey or khaki as this is my everyday wear - I tend not to dress in black.
Mike F on Sep 27, 2015
I bought it for him. He likes it.
Rao Z on Sep 17, 2015
I love wool outdoor clothing. This jacket looks perfect for the fall.
Guest S on Sep 11, 2015
everyone looks sharp in Shak
Anne D on Sep 9, 2015
I own the Shak Classic in black. It is understated fashion that substitutes for a sports coat for business meetings, travel and long days in the office. I'm buying a different color just to mix it up.
Guest S on Feb 6, 2016
cycling to work every day. great as outer layer for LA winters. i use a very light wind breaker on top on windy or rainy days.
bolívar i on Feb 3, 2016
My husband is 6' and 170 lbs. Should I order him a Large or a Medium?
Roberta S on Jul 5, 2015
BEST ANSWER: Roberta, I am 6 1" and 180#. I own the Large. The sleeve length is good, though I like them a bit long. The torso has a small amount of space, not firm fitting. It may depend on if he wants form fitting, which the M would probably be, or a more loose fit of the L. I'm happy with my large.
I am 5'10" and 150 lb. What size shake do you recommend?
A shopper on May 25, 2015
BEST ANSWER: I'm 5'8"/165 w/42" chest and 34.5" waist. My M Shak is snug in the chest and space at the waist. My L Shak it's room for even mid layer and certainly a base layer. My point: worn as a stand alone shirt (think: hiking and backpacking), the M would fit snug and move as one with the wearer; the L would work best for a loose layer or mid layer.
when are other colors than black available?
John F on May 28, 2015
BEST ANSWER: The Men's Shak Classic is our heavier weighted Shak and is more prominently offered in our fall/winter line. During the summer we only offer it in the Black but when the fall line is launched in September it will be available in four colors: Black, Pewter Heather, Red Ant and Blueprint. Thank you for your question.
4.6 / 5.0
90 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
two things. . .
I try to buy a couple of Shaks a year and until this batch they have been just terrific - the most brilliant things I have ever worn - but the two I have just bought flap around my middle and look just ordinary. Have you changed the dimensions? If so why?

And why no XL in the triathlon red, can I just ask? It is a beautiful colour and I'd still buy one and have it taken in if you have changed the
April 21, 2009
Love shak but it seems Ibex changed fit
I agree with Toby that past Shak jackets had a better fit. Just bought this one a few months ago and there is a flap on the sides in the middle. I usually take an Xl and it fits great - now its too big and not form fitting at all. [...]
December 14, 2009
Great material poor fit
Great idea and good weight for shirt, but very poor fit for a shirt that was supposed to be semi fitted. I am 6'1 175lbs and the size medium shirt was to short in the sleeves and torso. The fit was ok in chest but to baggy at the waist.
April 8, 2010
Wooly comfort
Got both the Shak Lite and Shak classic jersey for Christmas. Both are great and very comfortable but with different fabric feel and fit from the cut. Got both in size M which is great for me (6', 170 lbs).
Shak Lite is a little more regular fit and I prefer it for more casual wear. It is a little lighter weight (not much) so better for more activity or not-so-cold weather. Texture of the fabric is smooth.
Shak classic is a little more form fitting and I probably wouldn't comfortably wear a long sleeve layer underneath due to the fitted arms. But my wife likes it for me to wear out to dinner and for a more stylish fit. Fabric is a little more textured.
Would definitely recommend both the Shak Classic and Shak Lite. If you like a more fitted cut and want to look more stylish go with Shak Classic. If you want a more regular-fit cutt that is a little more casual & (slightly) lighter weight go with Shak Lite.
January 5, 2016
Want my old shak back
I have an older full zip shak that I've worn so often I've worn holes in the sleeves. It's been by far the best technical wool piece I've owned. This new shak just doesn't have the same fit. The body is now constructed out of fewer peices, making it much more boxy and less amenable to layering. I know it probably kept costs down, but I'd rather pay a bit more and keep the fit.
February 22, 2010
Great Sweater Replacement
Love this as a sweater replacement. Sleeves are a touch longer, which I actually like. At least they can cover the base layer instead of riding up like so many jackets do.

Fit is accurate to what is noted in the sizing. at 6'2" and 190# the large is just about right for me. But if one were over 200#, or quite muscular in the arms and chest, you might find the large a little constricting.

February 13, 2015
Great, versatile layer.
I bought the Shak Classic for a thin, warm layer that I could wear underneath a jacket. I'm very happy with it, although there are a few things I wish were different.

Feel: It's merino wool, so it feels amazing. It's incredibly soft and flexible.

Fit: I'm 5' 10" and 175lbs, and it fits perfectly as an inner layer: relatively close fitting so that it's easy to wear other items over it, but also not so tight that it looks like it's only athletic. It's also slightly stretchy, which makes it fit even better.

Style: Just as with the fit, it's versatile. Good for exercise, but also for casual wear.

Weight/size: Compared to fleece or cotton, it weighs more but takes up less space. It's really good for layering unless you're worried about weight.

Warmth: I was a little disappointed, since it's supposed to be 280 weight. I was hoping for a fleece-like jacket that wouldn't stink after sweating in it, and the latter is true, but I wish it were warmer on its own. I'd probably feel comfortable in it sitting at 65 degrees, slowly walking around at 55-60, hiking 45-50, and running 20-30.

Wind resistance: None. It's not marketed as having it, so I can't fault Ibex for it. But wow. If it's windy, I need a lot more than the Shak to keep me warm. Thankfully the Shak is great as a layer anyway, so it's easy to put a wind-resistant layer on top it to fix the problem.

To summarize, I love the fit, feel, and versatility, and I only wish it were a tad warmer and somewhat wind resistant. I wear mine several times a week and love it.
April 27, 2015
12 months ago
Men's full zip is a great garment
I'm very happy with the men's full zip shak classic. The fabric weight is very versatile and the fit is excellent. I have worn it in a variety of indoor and outdoor conditions and I love the combination of "just right" warmth and breathability. It works well for a casual day in the office as well as a hike with the dog. I don't normally carry my cell phone in a shirt but the chest pocket is useful for that when needed.
April 24, 2015
1 year ago
Same as it ever was (mostly)
I bought my first Shak ages ago and have almost worn it down to nothing. So finally, I decided it was time from a replacement even though I am still hanging onto the old one. The new one has the same weight, the same thickness, quality, warmth, etc so overall I am quite pleased. The one exception is the cut in the waste. The old one was more fitted in the waste and this one is a bit baggier. I prefer the old cut better.
September 29, 2015
5 months ago
SHAK Jackets -
I bought one of these jackets for every member of my family for CHristmas this year. We go from an XXL son in law to a S daughter in sizes - and no one was disappointed in color, fit, size of feel. I have already seen my kids wearing their jackets everywhere, and my husband, who is never easy to please and has more outdoor gear than most catalogs, is loving his Shak. All in all, one of the best
January 2, 2014