Customer Reviews Arc'teryx Ionia Merino Wool SS

I'm 5'10" 160lbs and the small fits perfectly snug. I climb, run, and lift weights with these shirts (currently own 3). The fit is flattering and intelligently articulated, the merino wool is top-notch, and the aesthetic is refined and clean. Bing-bang, giddy-gang.

Perfect shirt! Please make "tall" sizes. when I climb and raise my arms above my head the shirt pops out of my harness

Workout or base layer, it feels great against my skin. I also use it when I travel.

Daily shirt. Currently I habe 9 of this and the quality is great. 12 months after purchase there are no quality issues. The merino wool is perfect for summer and winter, warm in winter, water repellent in summer.

Great shirt for hiking. Comfortable and light, still warm enough for early mornings in the mountains. Fits true to size.

L fits beautifully with nice length on both the body and sleeves. The light grey is a bit sheer but expected for merino; not an issue with darker colors. Super comfortable as a base.

Fits to size comfortable across temperatures and durable

Light, comfortable and warm, everything I look for in a base layer

The Ionia is my favorite wool shirt and it's not particularly close. I've tried several other brands and this one is the best in terms of fit and fabric quality.

This is my everyday go to shirt (work, school, weekend, hike, climb, etc.) Great quality that almost makes it worth the cost. Great odor elimination, soft feel, good stitching, well cut.

Love the soft fabric and fit. The longer sleeves are great. Most other merino shirts have sleeves too short. My new favorite merino short sleeve shirt.

Great shirt, warm when needed and airy when needed

Incredibly soft and comfortable. Fit and construction are very good. Has worked great to work out, hike and do basically whatever in. Cost is a little steep but you in this case you're getting what you pay for.

I couldn't be happier with my purchase! The fabric is top-notch and the fit is spot-on. The design is true to the images, and the craftsmanship is superb. This item has quickly become a favorite in my wardrobe. I'll certainly be shopping here again!

Great fit, soft feel and quality materials, construction and design

6 foot 2 and 90kg and bought a medium and large but opted for the large. If you prefer a tighter fit go for the medium. Material is great and would purchase from Merino range again. T shirts are very long, not something that should put you but something that should be reviewed going forward.

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.

I bought this shirt online a month ago, it is my new favourite workout shirt. This shirt is super comfortable and it fits perfectly.

I bought several of these shirts, when I found that the first shirt I bought kept me cool in the summer heat. Hope to get many summers of use out of theses shirts. The only thing that I would nit pic I have wide shoulders and the shirt fits great but IMO shirts are a little long in the body. But I can live with that.

Like always, top quality when it comes to the workmanship and materials. Especially the merino wool is great when you doing intense activities a longer period of time because it provide you functional temperature handling and block the smell production.Just be aware that merino wool is not the most durable material when it comes to rock and plant contact

Soft and fine texture. Well ventilated. Worry free of sweating odor! Very nice product!

Love the material, colors and fit. It is a good idea to review the washing instructions

I love how it hides sweat, wicks, and dries quickly. Can be worn casually, but still put in effort for mid-intensity effort

These are my best undershirts. The thermoregulating, anti odor, and wicking properties of this weight of merino wool make it perfect for the summer. I do prefer the midweight Leaf version of this shirt in the fall and winter, but that can get a bit steamy in the summer. These are a lot thinner than the Leaf and pill a bit easier, so I don't use these with heavy packs or other activities where abrasion can rip up a shirt like this. I will grab my sun hoody that can handle being put through the wringer. These shirts are for chilling. You do have to baby these more and follow the instructions on the tag. I've found that a top loader's churn can be too rough on these, so I hand wash them at the end of the week by soaking them in a bucket and hang drying. They're more of a casual, everyday shirt that feel silky, provide all day comfort, and still give you all the performance fabric benefits of merino wool. If that's the use case you're looking for, these are perfect for you.

Wow!! What an amazing surprise, love the texture and fit....