Icebreaker Merino Wool --- A Hot Weather Review by Calculated Traveller

It’s 32 degrees Celsius in Kissimmee Florida today and I’m cool as a cucumber in my Icebreaker Merino Wool shirt.

Stop the presses! It’s that hot in Florida and you are wearing wool??

Yes, you read that correctly.

I am surprised as you are but that’s the exactly how I felt while I was wearing my merino wool shirt.

I’ve been reading a lot about merino wool the last year especially when it comes to keeping myself warm but the word “wool” PLUS the word “cool” normally doesn’t compute.

I’ve had experience with merino wool before. In fact, I own 2 jackets and a few sweaters to wear in the cooler months of the year but I’ve never worn merino wool in the hot sun before.

Merino wool or a merino sheep for that matter is entirely different from regular wool / regular sheep.

Check out this video from Icebreaker Merino that explains this “natural technology”

The weight of the fabric in grams/meter2 dictates the amount of warmth. When looking at how many grams to wear for hot weather Icebreaker Merino provides this guideline for their clothing:
120-135 = Featherweight – best for warm to hot conditions
150-170 = Ultralight – versatile for all season

I was sent 2 “super-fine” warm weather Icebreaker Merino Wool items to test out and here’s what I found.

Icebreaker Merino Wool Tech Lite Short Sleeve Polo

  • $119.99 Cdn
  • Size XS to XL
  • Colour: Black / Metro Heather
  • 100% Merino Wool Knit
  • 150gm Ultralight
  • Classic polo neckline with deep placket and button closure, flat knit rib collar, set-in sleeves, drop tail hem for added coverage, contrast color interior stitching

At first, I thought yikes I’m going to overheat if I wear a black shirt as I normally wear light colours to stay cool in the hot Florida sun.

But in reality, the black colour proved to be a wise choice while eating my way around the Epcot International Food and Wine Festival. The black colour is very forgiving in terms of food stains and generally, makes you look and feel slimmer (an important thing when you are being a glutton).

Icebreaker Merino Wool --- A Hot Weather Review by Calculated Traveller

I’m really happy with the amount of stretch, the fit, and the general appearance of this shirt. The polo style allows for more versatility in terms of where and when I can wear it as opposed to a regular collarless t-shirt as it can be dressed up or down.

Tech Lite Short Sleeve Polo Pro

  • Naturally anti-bacterial
  • Breathable
  • Odor Resistant
  • Stretchy
  • Not itchy
  • Fast air dry overnight
  • Easy wash in the machine or by hand
  • I’ve only washed it twice and both times it came out really well. I was worried that the black color would start to fade but so far so good other than some minor fuzziness (see Con below) it still looks brand new.

Tech Lite Short Sleeve Polo Con

  • After a couple of washes the finish of the fabric started to look a little fuzzy. I’ve since done some reading on the Icebreaker website and discovered this Icebreaker Care Guide which explains that the fuzz is natural and is caused by short fibres coming to the surface of the fabric. Icebreaker Merino suggests I wash the shirt with coarse fabrics like jeans to prevent the fuzz and any pilling so that’s what I’ll do next. Honestly, I’m the only one who noticed the fuzz and it’s only because I’m being picky while doing this review.
  • For the most part, I stayed cool while wearing it except for my back where my backpack was preventing my body and shirt to breathe.
  • Price tag is a bit high

Icebreaker Merino Wool Terra Long Sleeve Plaid Woven Shirt

  • $169.99 Cdn
  • Size XS to XL
  • Colour: Sweetpea/Alpine
  • 100% Merino woven with mesh eyelet 87% merino / 13% Nylon
  • 120gm Featherweight
  • Set-in sleeves, center front placket with snap closure, chest pocket with concealed zip, back vent and eyelet panels for ventilation, snap close cuffs, feminine shaped hem

I wore my shirt in the cooler temperatures when we started our day at 5 am to go on a hot air balloon ride. The temperature rose at noon to 30+ Celsius when I was en route to the airport. I then ended my day back home in Toronto Canada back at about 18 Celsius. The shirt worked exactly as I had hoped — I was comfortable in both temperatures. I was also perfectly comfortable on the plane — I normally find it a bit cool and regularly wear a jacket in flight.

Another plus is that once the plane landed, hubby and I went directly from the airport to a restaurant for dinner and my woven shirt still looked perfectly presentable with very few wrinkles even though I had been wearing it for 16+ hours.

Icebreaker Merino Wool --- A Hot Weather Review by Calculated Traveller

Terra Long Sleeve Plaid Woven Shirt Pro

  • Naturally anti-bacterial
  • Breathable
  • Odor Resistant
  • Wrinkle Resistant
  • Not itchy
  • Kept me warm when it was cold and cool when it was hot
  • Nice styling
  • At first I didn’t like the appearance of the knit panel under the arms but functionally it works really well
  • Easy machine or hand wash
  • Fast air dry overnight

Terra Long Sleeve Plaid Woven Shirt Con

  • Sleeves and shirt body is a little long for my petite body so I have to roll up the sleeves
  • The mesh knit panel underneath the arms may seem unattractive to some people but I’ve gotten used to it
  • Pricetag is a bit high

Icebreaker Merino Wool --- A Hot Weather Review by Calculated Traveller


Final Verdict Icebreaker Merino Wool — Hot

I’m pretty excited to have found a new go-to brand in Icebreaker Merino when looking at performance travel clothing. Both of these items are definitely going onto my regular packing list due their lightweight, versatility, comfort and easy care nature. They are both really great travel clothing items to own. The price tag may seem a bit high for some but I see the black polo especially to be an investment and something that I’ll be able to wear for years to come.

Stay tuned for another Icebreaker Merino Wool review — Icebreaker Merino Wool – A Cold Weather Review — soon where I test out BodyfitZONE™ Technical Base Layer Leggings and a Half Zip Shirt.

Have you tried wearing merino wool when travelling in hot climates? Let us know in the comments below.


I received this item from Icebreaker Merino for review purposes. This had no bearing on my review. As always, all my opinions are my own.