Your Cart is Empty


If you’ve ever bought one of our products before, we’d love to hear what you thought about it. And so would everyone else. If you could take even 30 seconds to leave a quick review, it would be really useful to everyone else who might be considering buying that product. And if you haven’t bought one of our products before, check out what some of our customers have to say about their ioMerino. As always, if you don’t absolutely love what you’ve bought, or have any questions, just email our ultra helpful customer service team and see if they can’t get you sorted out.

Based on 322 reviews
Super comfortable

Love these tracksuit pants. Very versatile and so comfortable. I should have bought 2 pairs

No such things as too many pairs of ioMerino Tracksuit Pants! Thanks for the review John, we really appreciate it!
A surprise

Purchased these as a requirement for running the Hubert 100km. The surprise was the extreme comfort! Unbelievably good👍🏽

Happy to hear they exceeded your expectations Jeremy!
multi sports socks

So comfy, versatile and durable. They are my favourite socks. Highly recommend them.

they are

Hi Rosie, so glad to hear you love the sock! They're a staff favourite as well!
Flattering and Super Comfortable

It is a more flattering fit than the Altitude as it is slightly loser around the tummy. I have several tops in the Ultra range and several in the Altitude range. I am a size smaller in the Ultra. If you prefer a more fitted look, then I suggest going down a size.
It's super comfy and feels a bit silky. I love the zip up as I can adjust the opening to regulate my temperature when I run. This top is a winter staple in my wardrobe, and has just enough room to fit snugly over an Altitude long sleeve zip-up top (as tested at Ultra-Trail Australia).

Thanks for your tried and tested review Sarah! If they can hold up in the Ultra Trail Australia ultra marathon, they can hold up to anything, right!?
Warm and comfy

Worn this one from CP3 to CP4 of UTA100. Very cozy and light.

Hi Gideon, thanks for letting us know how your new top travelled during the Ultra Trail Australia! Glad to hear it was a winner!
Altitude Crew Long Sleeve

Have worn both tops for running & tennis. Love the colours & they are soft, comfortable & wash & wear well.

Hi Chris, thanks for reviewing your recent purchase. I'm glad to hear you've enjoying your new Altitude Crew for lots of different activities! The Altitude crew is such a good all-rounder.
Less is More - More is More ... I needed more IoMerino in my Life :)

After buying couple of Altitude Crew Tops (and loving them) I've added the Altitude Tank to my Cycling Attire ... same Great Fit, Long Body Length, Comfort and Great Design as the Crew Tops ... without the arms ... Love It

Thanks for your review Damien! Glad to hear you're enjoy your new purchase. Sounds like your ioMerino collection is growing!
Summit Vest
Summit Vest

All I expected light warm durable with reliable zip second vest I’ve had old one still going strong.

Hi Bill, Thanks for the positive feedback on the vest! I hope you continue to enjoy it.
Warm Comfortable and Machine Washable .. I Love It

If your looking for a Natural Fibre Skull Cap for Winter ... Look no more ... Excellent IoMerino !

Hi Damien! Thanks for the great feedback! Enjoy.
So Good I've Brought More

I love the length of these tops there isn't a chance I'm going to end up with Plumbers Bum in IoMerino :)

No one likes a plumbers crack! Glad to hear you like to extra length in the Altitude Range. Enjoy!
Just decent

Material is solid. Bought Navy and Thyme and they fit differently with the Thyme noticeably tighter. Also maybe it’s different in Australia but these tanks have the largest armholes I’ve ever seen in a tank. It’s a similar fit as if I cut the sleeves off a t shirt. Disappointed in the armhole size and different fit between colors so can’t recommend.


This is my first purchase from ioMerino. I went with bust size since that’s the biggest part of me (!!) regardless of other measurements. Perfect fit.
Comfy. Warm. Fun.
Hit the trails in winter = worth every cent!

Thank you for the review! Enjoy the trails this winter in your new Mongrel! Their limited edition, so you're one of the few that has this design.
Super Toasty

The beanie fits my very small head, and my husband has the same beanie and a much bigger head, and the beanie stretches beautifully to fit his head too. Super earm and soft too.

The sisterhood of the travelling beanie. The ribbed beanie is the beanie for anyone, big or small head! Glad to hear you're both enjoying it! Thank you for the positive review.
Best Headbands

I now own 6 necktubes in different colours (one for each running outfit). In really cold conditions, I use one as a necktube and one as a headband, and the rest of the year, I wear them just as headbands. So good for wicking away the sweat, and so warm over my ears when I need it. Just love them.

I think owning 6 neck tubes makes you a neck tube connoisseur. Thank you for your review Sarah! So glad to hear you love them as much as we do!
Warm, Comfortable and Great Quality

I've brought a number of these now for Cycling and the fit and design is perfect !

super soft & comfortable

I adore my 'Run all the Trails' altitude tee in charcoal marle colour. Fabric is soft, very comfortable to run in and the cut is perfect. As the top is designed to be worn "body tight 'contact fit' layer", I simply ordered the next size up, so it isn't clingy. Very happy with my purchase.

Hi Sara, Thanks for your review on the cut and styling, its a great help for people choosing their perfect size! Enjoy!
Love it

I love my 2 new tops. I'm a hiker so also appreciate how light they are. The sizes are very small. Medium, which I always wear, is very tight. 2nd top I bought a large and that is perfect. Good for people to be aware of.

Thanks for your review on sizing Ursula. Its always helpful for other customer when they are trying to find their prefect size. Glad to hear your love your new ioMerino gear!
So good

My husband has singlets and boxers and wears them all year round as he is old and has a blood disease and your product keeps him cool in the summer and warm in the winter ,so I decided I would buy myself some briefs as well and I also am happy with the comfort and how well they wash with being constantly in the wash they are wonderful.

Hi Coralie, Thank you for your review. I'm glad to hear both you and your husband and loving your ioMerino!
Excellent hiking leggings

Purchased during the week for hiking and instantly knew from the feel that these were high quaility leggings. I was super impressed by the speedy delivery too. This weekend I wore them hiking over two days in temps around 13 degrees. The first day there was light intermittent rain and strong, cold coastal wind. They kept me warm and dry. I think they will be perfect leggings to wear during cooler weather hikes, but in the evenings when I am not moving I will need to pop on an extra layer but that’s to be expected. They are comfortable (not scratchy and seams are comfy) and I followed the size guide to get the right fit and they are perfect (although I am on the shorter side so there is some extra length in the legs, but not extreme). I love the high waist as they keep my lower back covered and they stay put. I am so pleased I found this brand and I would definitely purchase a second...possibly third pair as I feel the cold and I think these will be toasty leggings with boots and winter skirts. Thank you ioMerino for making an amazing product! Highly recommended!!

Hi Amanda, thank you for your tried and tested review and for putting your compression legging to the test! We love to hear what you got up to in your new gear.
Great running top for cooler weather

Great temperature regulation for autumn running and cool down when wet with sweat or rain. unzipping neck and pushing up sleeves really effective for cooling down when sun comes out. I tried not washing it for a week and it really did not smell bad. The only thing I would change would be to go up a size to M next time as the neck is quite firm when zipped up, but otherwise a great fit. Maybe

Ultra Tee
Comfy and no smell

Have worn this for good runs then hung in garage to air and not a hint of smell and so comfortable..amazing shirt

Hi Jeremy, thank you for the positive review. Glad to hear you're loving your new t-shirt and all the odour free benefits of Merino!
Solid for cold adventures

Have taken these done the south of WA and cruised along the Bibb track in hail and getting slammed by the ocean... not once did my feet feel cold

So comfortable

I can't believe how great this top is. The merino is so thin and warm but not too hot to run in. Can regulate the warmth easily by zipping up and tucking hands in. The fabric is soft and comfortable to wear and it doesn't get smelly after a sweaty run. Love it!

Thank you so much for your review Paula! We really appreciate it!
excellent product

not made in China so thats a plus, nice & long in the body so it won't pull out, haven't worn it as yet but I get the feeling I'll be back for another. Thankyou

Ultra Zip
Ultra Zip

Haven't worn this as yet but the quality is beautiful and will be so good for winter running


Fabric Guide

While Merino is an amazing natural fibre, not all Merino fabrics are created equal. At ioMerino, we make our own fabrics, using only the best quality fibres, and to very specific specifications that make the most of the natural benefits of Merino. All of them are 'Merino rich’. No cheap blends passed off as Merino. No cheaper scratchy fibres or synthetic substitutes to save money. No unethical production. And each fabric is made for a specific purpose. So if you see something with a small amount of elastase or nylon added, you can be sure it absolutely needs to be there to enhance the natural stretch and durability. 

It took every bit of our 140 years of experience in the wool industry to perfect our fabrics, but we think you’ll agree the end result was more than worth the effort.

Ethically Made. Ethically Sourced. Perfectly Natural. 


Altitude / Zodiac

Lightweight 170gsm 96% Australian Merino Wool with 4% elastane for extra stretch and comfort. A MicroMerino® Fabric. 


Ultra / Universal

Lightweight 160gsm 83% Australian Merino Wool blended with 12% nylon blended for extra durability and 5% Elastane for stretch and comfort.



Midweight 265gsm 96% Australian Merino Wool with 4% elastane for extra stretch and comfort. A MicroMerino® Fabric. 


Summerino - Keystone 

Ultra Lightweight 150gsm 100% Australian Merino Wool. A MicroMerino® Fabric. 


Merino Compression

Midweight 280gsm 76% Australian Merino Wool, 15% Elastane and 9% Nylon for extra stretch and compression properties.



Ultra lightweight ribbed 155gsm 100% Australian Merino Wool. A MicroMerino®  Fabric. 



Outer Weight 280gsm Fleece 100% Australian Merino Wool. MicroMerino®  Fabric. 



Midweight 260gsm 100% Australian Merino Wool. A MicroMerino®  Fabric. 



Midweight 260gsm waffle texture 100% Australian Merino Wool. A MicroMerino®  Fabric. 


Stride / Glacier / Velocity

Midweight 255gsm French Terry 100% Australian Merino Wool. A MicroMerino®  Fabric. 


Natural Merino Wool benefits: