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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 1080 reviews
Altitude Zip
Andrea Werner (Melbourne, AU)
Altitude Zip

Love the Altitude Zip so warm and perfict fit. Very comfortable to wear. Highly recommended this top.

Universal Tee - Run All The Trails
Sara Letcher (Adelaide, AU)
Comfy Casual T

Love this t-shirt. So comfortable and breathable. Fit is perfect to hide my mum tum too. Love the natural fibres!

Altitude Neck Warmer
Margaret McKenzie (Mount Hunter, AU)
Warm and pretty

This neck warmer is soft and light, I forget I'm wearing it. Adds a pop of colour (raspberry) to my jumpers and tops.

Ultra Zip - Big Heart Adventures
Carolyn Strong (Adelaide, AU)
Multi use

I bought this top for hiking but realise it will be great for cycling, dog walking, and working outdoors as well. Light warm and not skimpy.

Yoga Pants
Marlene Hudson (Rotorua, NZ)
Merino yoga pants

Really comfortable and warm to wear. Great as replacement to cold cotton track pants. Nice weight and great at preventing see through when bending. Lovely to put on after work or in weekend

Altitude Neck Warmer
Fiona Barnes (Sydney, AU)
Warm in winter protected in summer

You literally forget you have this on its perfection!

Yoga Pants
Fiona Barnes (Sydney, AU)
Finally! Awesome Yoga Pants

These have a perfect fit, shape, high waist - you feel like you can do anything!

Newton Arm Warmers
Melissa (Adelaide, AU)

Saved my day. Cold start to my half marathon recently and the arm warmers (along with my io merino tshirt) made a huge difference.

Stayed in place well and rolled up small to stuff in pockets later.

Cons. Snug fitting sleeve. Take this into account when ordering.

Altitude Tee - Run All The Trails
Laura Ferrier (Sydney, AU)
Cute tee!

Great tee. Glad I sized up as it definitely would have been too snug in my regular size!

Yoga Pants
Claire Moore (Sydney, AU)
Great yoga pants

Love them. Warm but not getting too warm during the day. Very comfortable. Looks great too. I am glad I purchased them.

Ultra Tee - Wolf
Sarah Tamang (Adelaide, AU)
Very comfy tshirt

This tshirt is great for running on cool days. I usually get too hot even with short sleeves and wear a tank. I dont get too hot with this tshirt, but it keeps me warm on those frosty morning runs! Loving it and want to purchase more!

Ultra Zip
Zo (Sydney, AU)
This jumper is so good I went online and brought another one!!

This jumper is very lightweight but it certainly keeps you warm. I am really amazed at how warm this jumper is. I recently wore this on a run with a ioMerino thermal underneath and it kept me at just the perfect temperature for the whole run I didn't feel the need to remove it when I warmed up. Well worth the money.

Glacier Tracksuit Pants
Mullamphy Sean (Canberra, AU)

I never had a more comfortable pair of track pants. So soft and so warm!

Yoga Pants
karyn boundy (Adelaide, AU)
Yoga pants

Very comfie slightly too late should have ordered smaller size !

Altitude 'Mongrel' Tee
James Cook (Sydney, AU)
Feels, and looks, great

This is my second Mongrel. The first is soft, durable, warm and perfect as a base layer in winter or as a smart T in warmer weather. My only wish is that you'd make in a thicker/heavier material. I'd buy one of those in a heartbeat!

Merino-Compression Leggings
Barbara Poole. (Sydney, AU)
Love them

A side phone pocket would be good

Universal Tee
Helen Brazendale (Hobart, AU)

Very happy with the shirts.

Altitude 'Mongrel'
Michelle Monaghan (Brisbane, AU)
Love it

Love the look and feel of this shirt. I have worn it on both quite warm days and cool days while hiking

Altitude Crew
Tam (Sydney, AU)
Best base layer I’ve found!

I absolutely love my altitude crew for staying warm during early morning chilly winter trail runs or bike commutes to work. They wear really well over time as well, my first one is two years old and still looks like the new one I have just purchased.

No Show Socks
Sharron (Melbourne, AU)
The best socks around.

Having searched hi and low for something like this, so glad to see these come up. They are incredibly comfortable and fit beautifully (size 9 women's and purchased medium). Hopefully more colours in the future😁

Zig Zag Beanie
Martin HIND (Sydney, AU)
tee shirts & beany

I am very happy with my purchases, they are warm and comfortable.

Altitude Neck Warmer
Janine (Adelaide, AU)
Essential Gear

I love my ioMerino neck warmers. They are the best buffs- versatile, light-weight, and they keep me toasty. I wear them to keep my ears warm for winter running. Once I warm up, I pull it down around my neck. Some other brands feel bulky around the neck, but these are the perfect size.

Altitude Crew
Richo (Adelaide, AU)
First purchase

I purchased an Ultra Zip, an Altitude long sleeve crew and a skull cap. I am generally between Medium & Large. In these styles for me at least - Medium is plenty big enough. The Ultra Zip fancy enough to wear to the pub or out to tea, the Altitude tee does the job exactly as described. The skull cap is brilliant. Small, warm, thin - definitely an essential piece if kit for Autumn/Winter in Adelaide.

Short version is - more than happy - hoping for a good long life and will look to buy more. The Ultra fabric smoother - the Altitude "feels" tougher. Might go for Altitude when looking for warmth and robustness - Ultra when looking for style & comfort.

A solid 4 1/2 out of 5 stars and I am told I am not easy to please!!!!!

Richo (Adelaide AU)

Newton Arm Warmers
Alistair Reid (Minden, AU)

delivery was really quick and product was high quality - worked really well at freezing temps over many hours of an ultra

Newton Arm Warmers
Emily P. (Sydney, AU)
Great product

I wore these recently at UTA. It was freezing cold, drizzly rain and sleet. They repelled the rain and sleet. I did not take them off, and am so glad I had them.


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 - Celsius 

Made from 45% ultra fine MERINO (Ultra Lightweight 150gsm), 45% natural TENCEL (made from sustainably grown wood fiber), and 10% nylon for extra durability. 


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: