Icebreaker Chase Zip

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Manufacturer Description

The Men’s LS Chase Zip is a perfect combination of form and function. Design details such as flatlock seams and eyelet gussets give freedom of movement and increase ventilation, while the collar and sleeve binding provides extra protection against winter weather.


  • Deep venting, reflective, centre front zip
  • Raglan sleeves
  • Eyelet gussets for ease of movement and increased venting
  • Zipped stash pocket at hip on New Model
  • Flatlock seams
  • Drop-tail hem
  • Icebreaker logo and GT wordmark
  • Measured on Size Medium
    • Weight – 255 g (9 oz)
    • Center back Measurement – 71.5 cm (28 in)
    • Sleeve Length – 87.6 cm (34.5 in)
    • Pit to Pit Measurement – 54.6 cm (21.5 in)
  • Retail – $100

YMMV Review

Design ★★★★★

I have to say that I have been a recent convert to wool. I have recently purchased several wool tops and will probably get more if I can. If you would like to learn more about wool, check out the link below.

Back View

While I have not always been a fan of the tops design, I really like wool. This shirt has a bit of lycra (3%) in the fabric which gives it a bit more stretch and recovery which is great. The benefits of wool are that it is a renewable resource, does not stink, and adapts to conditions well. I have noticed that I can use this top several times between washes and it does not have the odor that synthetic shirts develop.

The top has flatlock seams to help with chafing and is made of two types of fabric. It has the regular wool on the front, back, shoulders, and tops of the arms. The sides, and under arms are a perforated wool that breathes and stretches better. This has created a top that moves well with you and discipates heat well. I do notice that sweat that does soak into the shirt takes slightly longer to evaporate that a synthetic shirt. The Chase Zip is made out of Icebreaker’s GT200 fabric which is their all-around fabric thickness. Not as light as their GT150 or as heavy as their GT260. The fabric is surprisingly warm but breathes well, dries well, and except when actually damp, it does not stink.

Fit ★★★★☆

I am 5’11” and 160 pounds so I got a medium. Overall the fit is pretty good. It has a decent length in the front and back which I like. It has a slight drop tail in the back. I have not worn it on the bike yet but think it would work well in all applications except really aggressive positions on the bike. In that case you will probably want to have a cycling specific jersey anyway, which Icebreaker now makes.

Fabric Detail

Using it on runs, I have really liked the venting of the front zipper and the location of the breathable panels. Also the arms are of ample length and include thumbholes which are nice for days that do not require gloves but still are still slightly chilly. The only gripe that keeps this from a 5 star rating is that I find the neck a bit tight fitting, and I would say I have an average neck. Other than the neck, the Chase Zip has become one of my favorite tops for running, hiking,  and wearing around town. The fit is good, temperature regulation is great, and the anti-stink is bonus if you need something for several days.

Overall ★★★★½

I really like this top. It fits good, performs well, and I feel better that it is a renewable resource. Icebreaker uses only Zque certified ranches from New Zealand. This includes assurance that production systems meet suitable standards for the stewardship of livestock, management of the environment and socially responsible practices, and that the resulting products are of the highest quality. Each peice of apparel has a unique Baacode. This allows you to see what stations in New Zealand your top came from. I think it is a pretty cool feature and the transperancy in the process makes me feel good aobut where my dollars are going. The Baa Code for this top is: 3D7B12727.  If you would like to check it out for yourself, click below.

Thumb Loops

I use this top it for a wide range of activities: running, hiking, xc skiing, and even to the office. While it takes a bit more effort when laundering (no dryer), you don’t have to wash it as often. I am even a big fan of the appearance of the Chase Zip, has to look good too! The Icebreaker Chase Zip retails for $100 which is expensive for a lightweight top. While there are a bunch of features to justify this, you will have to decide if it is worth the money. As with all my reviews, your mileage may vary.


  • Wool is a renewable resource
  • Zque certified
  • Good fit, long arms and torso
  • Odor Resistant


  • Tight Neck
  • Price
  • Have to air dry


Long Term Check-In

I still stand by my initial review of this product, it has worn really well and I have added a couple similar products from this product line. Durability does not seem to be a problem. After a bunch of use it still looks like new.

About the Author

I am an avid runner, cyclist, swimmer, hiker, climber, skier and many other activities that would make this list too long. I started Your Mileage May Vary Reviews in Early 2011 to combine two of my passions: sports and gear.

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