Shak FZ

# 671 | Women's


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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.

Our Shak is our most loved product because it is dependable. 21 micron Merino wool gets warm done when you need it. With a clean semi-fit cut and raglan sleeves.

Tech Specs +

 Semi-Fit Fit Guide
Wool Gauge:
Fabric Gram Weight:
 390 g/m2
Garment Weight:
 15.52 oz
Fiber Content:
Fiber Source:
Fabric Source:
 New Zealand
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 weave is square and dense, creating a rugged yet soft knit 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.

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.

Customer Photos and VIdeos

Q&A and Reviews

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Why did you choose this?
Ibex Outdoor Clothing Store
This is so cozy, wife has converted it into a pajama top this past winter during the Polar Vortex. Doesn't get any better!
rajan p on Jun 4, 2015
This is so cozy, wife has converted it into a pajama top this past winter during the Polar Vortex. Doesn't get any better!
rajan p on Jun 4, 2015
4.4 / 5.0
29 Reviews
5 Stars
4 Stars
3 Stars
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1 Star
Love the Shake Full Zip
I have two. As a woman, having two of the exact same thing may not be unusual. Believe me, for me it is. One is a med. and one is a small. I'm 5'8" and a pretty athletic build (re: narrow chest 34A). I would have thought the med. would be perfect but it fits a little looser...not bad, more like a cardigan and the small fits trimmer and it's nice to have the differences depending on what I'm w
February 15, 2012
I wear this everyday
This is my favorite piece of clothing since the red wool boy scout shirt I wore every day 14 years ago. I love the fit, the no-itch fabric, the warmth. I really do wear this to work with a skirt & then find I can't take it off & just wear it to bed. I just bought one in another color, which is something I, the thrift shop shopper, never have done. Thanks for making such an exceptional product.
February 16, 2012
Love this jacket
I bought the orange color because it was on sale in my price range. Was concerned I might not like the color as I am not fond of orange usually. But, as usual, Ibex pleased me with this lovely coat--the color is softer than it appears online to me and more of a coral than a true orange. It is a nice weight and I am sure I will get lots of use out of it during cooler months. It is very stylish. I w
July 4, 2013
Shak this
I discovered the Shak full zip in 2007 while looking for a wool athletic type jacket/sweater. Since then I have owned 5 Shak full zip jackets and adding more. These are the most versatile piece of clothing I own. I love this jacket and IBEX clothing!!!! I can dress it down with simple t-shirt or dress it up with a silk blouse. I love the smoothness of the fabric which I have not found it to p
February 1, 2013
Would buy this product again.
Light weight sweater on cool nights or days. Layering under jacket on colder days either hiking, kayaking, or skiing.
October 14, 2010
Shak is the best
I bought yet another Shak full zip because these are my favorite year round go everywhere jacket. I have experienced the hip pockets will soon flatten against my body after a few times wearing or simply hanging on it's hanger. At first I didn't like those pockets being right on top of my hips but this jacket turned out to be my favorite. The full zip style is the most versatile of the Shak fami
February 2, 2013
Lives up to the hype!
I am happy to say that this Shak does live up to all the good things I've read about it. It fits well, is comfortable and goes everywhere! I have worn it on cool days this fall out on the farm and also to town to run errands. I am 5'7" and 120 lbs with wide shoulders -- the medium suits me with a layer underneath. So glad I bought it.
October 21, 2010
Love the Shak
Shak is my favorite Ibex fabric because it looks good, doesn't pick up *too* much cat hair, and is very durable. After trying most of the Ibex zip-up tops, the Shak Full Zip is the one I've decided is my favorite. I hope they keep making it, because I plan to keep buying it.

Two caveats: 1) I find that it runs a little more snug than other Ibex tops. Normally I take a Large, but I prefer Extra La
May 1, 2012
Great Jersey, interesting zip pockets
I use this jersey under a windbreaker for cold weather cycling. It breathes extremely well, fits great and is warm without being bulky or heavy. In fact, the fit is very flattering. It's also attractive enough to wear on weekends or to work.

The side zip pockets are functional and add interest. A great jersey!
November 29, 2010
Quality product from a quality company
I cannot say enough good things about this sweater and about Ibex! I own quite a few Ibex shirts in different weights, but this is my favorite for its versatility and warmth.

I love these as a mid-layer for hiking 14ers in the summer and skiing in the winter. I'm an avid traveler, and a Shak goes with me on every trip. I haven't found another fabric that can beat its wrinkle-resistance and ant
May 5, 2013