How to Choose Base Layers
Arc'teryx Ionia Merino Wool Base Layer Top - Men's
$63.93Compared to $90.00* Save 28%
With its streamlined and comfortable fit, the men's Arc'teryx Ionia Merino Wool base layer top is made to move with you on your hikes, runs, ski tours and mountain treks.
- Breathable, lightweight and air permeable
- Natural merino wool has anti-odor properties
- Ultrafine merino wool is known for soft comfort, natural temperature regulation, moisture management and odor resistance
- Merino fibers are wrapped around a nylon core for added durability
- Articulated patterning for unrestricted mobility
- Crew neck
- Contains materials that meet the bluesign® criteria
- Crafted at a Fair Trade Certified™ facility as part of Arc'teryx commitment to transition 80% of Arc'teryx products to fair trade certification by 2025
- Contains wool certified to the Responsible Wool Standard (RWS), a voluntary program that helps sheep farmers meet consumer, retailer and brand demands
- The RWS standard certifies they meet rigorous animal welfare and land management requirements
Imported.
View all Arc'teryx Men's Base Layer Tops| Best Use | Multisport |
|---|---|
| Shirt Type | T-shirt |
| Fabric | Merino/nylon core-spun jersey: 87% RWS wool/13% nylon |
| Moisture Wicking | Yes |
| Underwear Weight | Midweight |
| Sleeve Length | Short Sleeve |
| Gender | Men's |
| Sustainability | Contains materials that meet the bluesign® criteria Fair Trade Certified Wool certified to the Responsible Wool Standard (RWS) |
Arc'teryx Clothing - Men's
| XXS | XS | S | M | L | XL | XXL | XXXL | XS Short | S Short | M Short | L Short | XL Short | XXL Short | S Tall | M Tall | L Tall | XL Tall | XXL Tall | 28 | 30 | 32 | 33 | 34 | 36 | 38 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chest | 33 | 35 | 37 | 40 | 43 | 47 | 51 | 54.5 | 35 | 37 | 40 | 43 | 47 | 51 | 37 | 40 | 43 | 47 | 51 | |||||||
| Sleeve Length | 30 | 31.5 | 32.5 | 34 | 35 | 36 | 37 | 38 | 32 | 33 | 34 | 35 | 36 | 37 | 33 | 34 | 35 | 36 | 37 | |||||||
| Waist | 27 | 29 | 31 | 34 | 37 | 40.5 | 44.5 | 48.5 | 29 | 31 | 34 | 37 | 40.5 | 44.5 | 31 | 34 | 37 | 40.5 | 44.5 | 30 | 32 | 34 | 35 | 36 | 38 | 40 |
| Hip | 32.5 | 34.5 | 36.5 | 39.5 | 42.5 | 46.5 | 50 | 54 | 34.5 | 36.5 | 39.5 | 42.5 | 46.5 | 50 | 36.5 | 39.5 | 42.5 | 46.5 | 50 | 35.5 | 37.5 | 39.5 | 40.5 | 41.5 | 43.5 | 45.5 |
| Inseam | 31 | 31 | 31.5 | 32 | 32.5 | 33 | 33 | 29 | 29.5 | 30 | 30.5 | 31 | 31 | 34.5 | 35 | 35.5 | 36 | 36 | 31.5 | 31.5 | 32 | 32 | 32 | 32.5 | 33 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated.
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logan clovis ca
Received free product
Clovis, CA
Lots of exercise, no smell! Very comfy, stretchy.
1 year ago
Got this free in exchange for a fair review. Right off the bat, I did yardwork and some pretty light hiking in it (washing between, of course) - and after both activities where a normal polyester shirt would smell pretty terrible, it just smelled like whatever deodorant I had on. Very nice change VS literally every other 'outdoor' style shirt I have, which takes on a pretty awful scent even just wearing on a day without much physical activity. Today, I built a shelf, did all the edging, moweing and blowing off necessary to go along with those, rearranged the garage, and no smell! I know those aren't REI activities, but they're definitely activities that would create some offensive odeuration in other makeup shirts. I have had some "pokey" style grasses lodge their seed pods into the shirt, and they pulled out without any tearout. Fit is semi loose. I'm 6'3, and just short of 200#, and ordered a Large. Sleeve length is actually perfect, torso is not loose, but not fitted. Fabric itself has better than cotton elasticity - stretches and rebounds like elastane polyester blend. Very comfortable. It is very soft, not itchy one bit due to antimicrobial merino wool. The only concern I have is that the fabric is starting to 'fuzz up' a little bit - and I haven't driven in it (seatbelts are gnarly). I have had Darn Tough socks that did that, and lasted for years and years. This is my first experience with a Merino t-shirt - unfortunately for my wallet just this one was free. It's awesome.
Age:25–34
Weight:175–200 lbs.
Height:6'3"
Yes , I recommend this product
JB from AZ
Received free product
Northern AZ
Too nice for running!
1 year ago
I got this shirt for a winter base layer to run in but it's just too nice a shirt for that. I wore it shopping and going out for dinner and it washes clean and like new every time. I finally did break down and put it on as a base layer for a chilly morning run and it is really surprisingly great for keeping my core warm. I know i worked up a sweat during the run but when I got home and took off the shirt it felt dry and had no smell. Now my big decision is to keep it as a nice going to town or a running shirt!
Age:65–74
Weight:125–150 lbs.
Height:5'10"
Yes , I recommend this product
AggiePlanner
Received free product
Austin, TX
Great (and Forgiving) Fit!
1 year ago
I am 6'2" and approximately 280lbs, and working toward improving my health. This shirt fits very well as either a base layer or standalone T-shirt. Long enough to tuck in and not easily come untucked. Arm length and openings are also a great fit. For casual shirts I typically wear an XXL so I would note this XL shirt may run a little large unless you choose to size down for a snug fit. Material is a bit thin so lighter colors might be more see-through. Seams and collar/neck are very thin as a result of the thin material.
Age:35–44
Weight:275–300 lbs.
Height:6'2"
Yes , I recommend this product
Ja81
Received free product
California
Above average
1 year ago
Shirt is very soft and comfy to touch and wear. It does retain a bit of heat but dries rather quickly. Sizing on the shirt is very close, almost like form fitting which I don’t care much. All and all I like shirt and depending on the price might buy it as an under layer.
Age:35–44
Weight:125–150 lbs.
Height:5'3"
No, I do not recommend this product
David
Amazingly Comfortable
1 year ago
90%+ of my wardrobe is merino wool and my first impression is this shirt is not at all what I was expecting. The fabric has a much more technical feel and in fact if it were not listed in the product materials, I would be hard pressed to guess this was almost 90% merino wool. That said this is an amazingly comfortable shirt both in the fabric and the fit. Some Arc'teryx shirts have a very odd high/tight neckline which makes them borderline unwearable but this blessedly does not suffer from the same design. Arc'teryx has (used to?) an edge/seamless trail running t-shirt that may just be the most comfortable t-shirt in the world (it is for me) and this runs a very close second.
Originally posted on arcteryx.com
sierracanon
Camino CA
A near pe
2 months ago
I am a merino shirt junkie, always on a quest to find the perfect shirt. This shirt is almost that. The generous fit works well with my "ample" physique, and the long cut ensures that my ample physique will not be based upon in its glory. The core-spun merino and nylon blend is super soft and breathable, whether wandering through town on a hot muggy day, going out for a hike, or racing through an airport terminal to catch a connection. I short, this is a super comfortable and great looking shirt. Con: it IS a bit pricey, so you might want to use a discount coupon if you have one available.
Age:65–74
Weight:225–250 lbs.
Height:5'11"
Yes , I recommend this product
JohnN
ALASKA
Nice but fit
1 year ago
Tried it on. Ordered large which is my normal size. Fits well in torso and shoulders but the collar is high in front and cuts across my throat and is low on the back of my neck. Yes, I had it on right, logo in front, but feels backwards. Can't imagine others won't have similar issues. Uncomfortable in front, more bare uninsulated skin in back than there should be. I really respect Arc'teryx and have one of their older merino t shirts that is wonderful. But this is not, and it costs more than most similar products from competitors. I Expect better from them.
No, I do not recommend this product
Originally posted on arcteryx.com
Response from arcteryx.com
Customer Service
1 year ago
Hello John, Thank you for reaching out and sharing your feedback on the Ionia Merino Wool Shirt SS. We're genuinely sorry to hear that you're disappointed and that it did not suit your needs. Our customers will occasionally read these reviews, so we appreciate it when others share their experience with us, and we will be sure to pass your comments along to our design team. If you have any additional comments or concerns, we welcome you to contact our Customer Service team, and one of our representatives would be happy to assist you. All the best
Texan22
Received free product
Texas
Pass on this one
1 year ago
Material is light and soft, but the fit is just off. As a base layer it should be well fitted and comfortably snug but not this one, good in the shoulders, a little tight in the chest, but the sleeves come down to my elbows and the neck is way too big. I would size up for a more comfortable fit but would worry the neck would be way way too big and sleeves would be past my elbows.
Age:35–44
Weight:175–200 lbs.
Height:5'10"
No, I do not recommend this product
PNWCanuck
PNW
Super comfortable but unforgiving
5 days ago
What I liked best about the tee was how soft and comfortable it was. I almost always wear a M and the M was true to size for me. The shoulder caps had a bit of an odd pucker though. The reason I returned the tee was that a common stain, exactly one that I had previously also on a Smartwool Merino tee, would not wash out even with three attempts including spot treatment. The fine material was also fussy - easily losing shape and wrinkling. Not the no fuss travel and easy to live with companion I was hoping for.
Weight:150–175 lbs.
Height:5'9"
No, I do not recommend this product
Jan1
Germany
Unfortunately too long but otherwise a great shirt
1 year ago
The shirt fits perfectly and the material wears comfortably and isn't scratchy at all. But there is one big downside with the shirt and it is the length. If it wouldn't be 5-10cm too long on the torso I would have kept it. But unfortunately because of the length I had to send it back. Please Arcteryx make this shirt with a "normal" length. The current version seems like a "long" version of the shirt. Or maybe you do it like with your pants where you offer "short", "regular" and "long" versions.
No, I do not recommend this product
Originally posted on arcteryx.com
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