Shak Jersey

# 616 | Men's
Signature dense Merino ponte jersey

  • Signature dense Merino ponte jersey


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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

If you're looking for versatile gear that won't sacrifice performance for style, grab the Shak Jersey to satisfy all your technical (and fashion) needs. Made of dense 100% Merino jersey, this top will breathe well, keep you warm even when it's wet, and won't stink even after multiple uses. Perfect as a stand-alone layer, this jersey also teams up well with a vest or shell to offer superior protection from the elements.

Tech Specs +

 Semi-Fit Fit Guide
Wool Gauge:
 21 micron
Fabric Gram Weight:
 380 g/m2
Garment Weight:
 17.76 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

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Browse 2 questions Browse 2 questions and 46 answers
Why did you choose this?
Ibex Outdoor Clothing Store
Warm and comfy.
Brendan R on Feb 9, 2016
warm mid-layer
James E on Feb 4, 2016
Warm and comfy.
Brendan R on Feb 9, 2016
To try your wool products
Guest S on Feb 5, 2016
warm mid-layer
James E on Feb 4, 2016
i have owned this model before
Tracy B on Feb 3, 2016
Wanted wool. Saw your item for sale in a retail store in Victoria Canada, but they didn't have it in black. Well made, overall, but I'll take this opportunity to tell you the stitching around the wrists (sleeves) is fraying. Still like the product (wool,obviously) but perhaps the stitching could be improved? Thanks
Robert S on Feb 3, 2016
You do not have a womens half zip in this shak weight fabric. So I am trying a mens small
Wildavino on Feb 2, 2016
similar to previous purchase as part of layer system
John C on Feb 2, 2016
Familiarity with my other Ibex products
The fact that it's wintertime
The fact that it's on a fantastic sale
The rave reviews
Rick R on Feb 1, 2016
comfy, warm, and the fit
Lawrence C on Feb 1, 2016
Got one for Xmas and wanted more
Guest S on Jan 18, 2016
Bought one several years ago and its warm, durable and retains no odor. Regular washer dryer cycles and still holding up over years of use. Now I have black and red to go along with the blue. Great product.
Tommie L on Jan 17, 2016
Your dogs rock
Vic on Jan 15, 2016
The best Fall thru Spring sweater like shirt. Stylish and warm.
CHARLES M on Jan 15, 2016
Technical Fit
Glenn S on Jan 12, 2016
nice mid weight fabric. Many uses with layering.
Lynn L on Jan 2, 2016
Our family likes Ibex for style and warmth.
Pamela M on Dec 16, 2015
like the look and feel
Guest S on Dec 16, 2015
Great for work - and for cycling there
Guest S on Dec 13, 2015
Golf, hiking, outer layer for warm up.
Monique L on Dec 11, 2015
for my son who rides a bike to work in Manhattan
THOMAS W F on Dec 9, 2015
Have purchased before for husband. He wears it all the time. Now buying for son.
CLARE D on Dec 5, 2015
Will wear it skiing
marilyn m on Dec 4, 2015
Great reviews!
Maritza R on Dec 1, 2015
It will always be a favorite and always in the Ibex medal round. PLEASE RELOCATE IBEX LOGO. It is annoying and I talk up Ibex so much AND it is no longer necessary for continued booming success. I like the location on the T-shirt's sleeve much much better. Friends and family have the same "complaint."
Kevin E on Nov 30, 2015
This looks like a great option to wear by itself, as well as under another article of clothing. I like the versatility!
Guest S on Nov 30, 2015
The "go to" top.
Mark G on Nov 25, 2015
I have been wearing shaks for years. I have several. it is the one piece of clothing that works well in the office and out climbing all from the same perfect weight shirt.
Dallen W on Nov 18, 2015
My husband loves your stuff! We visited your store in Seattle and he tried it on and loved it. I got it for him for a Christmas present. We love Merino wool and love that you are an American company making great quality clothes.
Guest S on Nov 8, 2015
I bought one for my son about 8 years ago (it's still in perfect condition, btw) and he requested another one for Christmas this year.
Guest S on Nov 8, 2015
For ski base layer.
MARC B on Nov 3, 2015
I have had a black one for years. It is one of my favorite pieces.
Troy T on Oct 25, 2015
To replace an existing, worn out sweater.
Guest S on Oct 15, 2015
Because this color was NOT offered in women's
Colby D on Oct 10, 2015
for my dad to wear skiing
Heather W on Oct 8, 2015
Great reviews - bought S M's as size chart shows conversion from M to W. On sale - will be versatile.
W's sale did not have comparable item in my size.
KAREN B on Sep 30, 2015
I have other Ibex products. Great quality and love wool over synthetics
Guest S on Sep 27, 2015
Really like my shak vest. Need the jersey.
Guest S on Sep 26, 2015
Warm but allows easy movement
carol e on Sep 22, 2015
I just love wool! The fit is great, it's durable, warm. I like the sleeve length- covers the wrists well. Very well made.
Brad W on Sep 6, 2015
Just the right weight. Durable, comfortable, no odor, has it all.
Randy D on Aug 18, 2015
It is the cat's pajamas. As a year-rouind bike commuter in Chicago, I could not have chosen a better piece. Works well by itself in late fall, then layer a Woolies under it and soft shell on top of it for the really cold winter spells. Pricey - but worth every penny. And, like all Ibex wool gear - no stink.
Paul P on Aug 5, 2015
Gift; very reliable favorite.
Tama on Jul 22, 2015
This was a gift for my mountaineering son.
Janet G on Jul 15, 2015
Husband favorite day to day wear.
Marina C on Jun 16, 2015
I really like the Ibex products and quality.
Chris S on Apr 13, 2015
To try your wool products
Guest S on Feb 5, 2016
i have owned this model before
Tracy B on Feb 3, 2016
What are the actual garment measurements(laid flat) of the chest(flat across), hem(flat across), neck(inside circumference) and sleeve(center back to cuff) for a medium and large ?
A shopper on Jan 15, 2016
BEST ANSWER: Hello, Thank you for your questions. Please call in for specific measurements!
4.8 / 5.0
131 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
He loved it
Weekend wear. Could also cycle in it. Love the longer length.
November 13, 2010
My favorite all-purpose piece...
It's the one piece that I take everywhere...dresses up nice with a pair of khakis. Mine has been snowshoeing with me and the next day at the office. Just get one.
December 30, 2008
incredible jersey
I love this jersey. It's one of those magic garments. It fits beautifully, athletic but flattering fit. I'm 5'11" and weigh 150 lbs. and long limbed, the medium fits me perfectly. I commute by bike and wish I could wear this every day. It has a broad comfort / temperature range and can be layered to suit very cold temps. I'm a huge fan of wool and this is the best, most versatile single wool garme
November 25, 2010
Very Nice Jersey
This is a good all around jersey just like it is supposed to do. I like the blue a lot and the sales price is great. I ordered a small and this is perfect for me - 5'10" 155 lbs to have a contour fit If I ordered a Medium it would be too baggy. 38" chest.
October 25, 2010
Nice Quality Jersey
This was my first IBEX jersey and I'm very happy with the Shak. I am between a S and M and since I don't like garments that are baggy I took the S (also to get the great Outlet price) The Small is a good fit except I'm 5'11" have long arms and would like another inch in the arms and even two more inches in the torso. But all and all I like this jersey a lot and love the Blue! Hopefully it will wea
October 8, 2010
Incredible Product!
I bought this for my husband for his birthday and he hasn't taken it off since he opened it! He absolutely loves it!
October 2, 2010
Gift made mother-in-law look smart.
My son-in-law has several Ibex products, so I was sure he would like the sweater and he did.
February 11, 2010
instantly one of my favorite pieces!
It's no surprise that this is the big favorite in the Ibex line...the fabric weight is perfect for sweater or jacket the collar up and you're warm, zip it all the way down and you vent to cool...the cut and colors are very stylish in almost any setting. I'll be wearing the Shaq for many years to come...on an everyday basis.
August 10, 2010
The best Ibex Ever
Sharp and stylish
December 3, 2009
Bike, run, ski, hike, hang out...
The Ibex Wool Shak: It does it all. I love mine (and I have 3) and have worn them from riding a plane to cycling in the Tetons.

I have yet to rip one no matter what I do. Probably the single best piece of clothing I've got. I've not tried their new Shak Sport but that's my next purchase - maybe I'll wait until their sale but probably not!! Get one...(or two) if you can.

Wool rocks!
August 20, 2007