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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 1349 reviews
Yoga Pants
Sue Davis (Wellington, NZ)
Yoga Pants

I'm thrilled with my yoga pants - one of the most comfortable items of clothing I have ever bought, but they manage to look smart and flattering at the same time. I was so delighted I ordered another two pairs.

Ultra Zip
Ultra Zip

I bought this for summer bike riding. Wonderful comfortable, light weight and the long sleeves give my arms protection from the sun. First time I have used thumb holes. Recommended.

Summit Zip Hoodie
Norma Edwards (Bentleigh, AU)
Amazing Service and products!

I love my Summit Zip Hoodie! Its so comfy and a great fit- true to size for me. I’ts been warm in Victoria so it hasnt had much wear yet but Im looking forward to wearing it as the weather turns cooler.
Io Merino offers the fastest delivery times I have ever experienced and excellent service by phone when required. I now have several Io items and love them all for their fit, warmth and looks. Thank you Io!, It is wonderful to purchase quality items designed right at our front door.

Stride Tracksuit Pants
Jon (Saint Paul, US)
Amazing For Lounging

These are the absolute best. High quality, amazingly soft and perfect fit. They are a fantastic pair of pants to throw on after a long day.

Thanks for taking the time to let us know, we think they're awesome!

Ultra Crew Neck
franck studeny (Central, HK)

Excellent quality and fast delivery

Altitude Briefs
Muzza (Caroline Springs, AU)
Almost perfect

I love wool undies. With wool you only need one pair (ha ha, but almost true!). These are great quality. My only quibble, like all or most jocks, the elastic at the top of the legs is just a little tight for me.

No Show Socks
RachelB (Sydney, AU)
Super Socks

These socks are super comfortable, I love wearing them.

Stride Tracksuit Pants
RachelB (Sydney, AU)
Best Comfy Trackies

These are great. Fit true to size, but go down a size if you're not sure or if you have a small waist as the waistband is generous. Love the length and the material is so comfortable.

Altitude 'Mongrel'
patrick rosello (Bournemouth, GB)

Altitude Mongrel bought 5 years ago, used for all cold weather runs since ( a good few months of the year in UK!). Haven't found any equivalent in terms of comfort, heat, durability, breathability. After a few falls on trails unfortunately got ripped in too many places so just ordered a new one!

Super comfortable

After wearing another brand merino wool underwear for years, paying a fortune and having them fall apart way too quickly, I decided to try ioMerino and and am so happy I did. They are much better quality and super comfortable! I'm wearing them during a Perth summer and they breathe well and in true merino style, keep odours away :)

Pinnacle Zip
Chris Halstead (Adelaide, AU)

great product suits my uses including sea kayaking and working in the bush

Pace Compression Leggings - Outsider Edition
Natalia Borowiec (Sydney, AU)
most comfortable leggings

Awesome leggings. Super soft. Feel like the second skin.

Glacier Tracksuit Pants
Vivi Sirola-Lee (Sydney, AU)

Husband super happy

Celsius Tank
Andrew W (Mansfield, AU)
Running singlet

Great running singlet that doesn't stink up, is comfy against skin and sheds heat well enough in warmer months. Only thing more comfortable is no shirt at all. Delivery was prompt. Bigger choice of colors would be good but the blue is nice.

Zig Zag Beanie
Karen Scott (Minneapolis, US)
Reversible warmth

Super warm for MN winters. Love that I can reverse it to change up the look.

Stride Tracksuit Pants
Kevin King (Springfield, US)
Love the material and quality but they're too short

They barely get to my ankles!

Hi Kevin,
I'm sorry to hear that the Stride Tracksuit pants aren't fitting you quiet right.
Send me an email at hello@io-merino.com and I can help sort out a size exchange for you!

Glacier Tracksuit Pants
Shane VanOosterhout (Grand Rapids, US)
Love them.

So nice.

Cycling Jersey
Kit (Teton Village, US)
beautiful cycling jersey but runs really small

I usually buy a large in my wool shirts as I want them to last years and they can shrink a bit, even without ever putting them in the dryer. But this one I feel lucky I bought in an XL because it fits like a medium! A little too small for broad shoulders and 36C chest, but I'm keeping it as I don't want to deal with a return. Otherwise a beautiful cycling jersey.

Hi Kit,
Sorry to hear that the Cycling Jersey isn't fitting.
I'm more than happy to help you out with exchanging it for a better fit!
Reach out to me at hello@io-merino.com and I'll make sure the process is hassle free!

Universal Polo
SMG (Skinners Shoot, AU)
Superbe quality

I love the polo very much, the quality and finish are superbe, perhaps a bit too long but that's fine for a relaxed look. Would love to have it in other colours

Pace 3/4 Compression Leggings
LINDA (Melbourne, AU)
Just the trick!

I thought nothing could beat the full-length compression tights for comfort and early morning winter runs… but I was wrong! These 3/4 tights are a game changer- comfy, sleek and with pockets! Awesome in every way!

Stride Tracksuit Pants
miranda macrae (Melbourne, AU)
Love ioMerino!

Friendly helpful staff, great products, I have 4 pair of the stride trackies cos I live in them!

Ultra Tee - Sheep
Heather Griffiths (Melbourne, AU)
Sheepy sheep?

Love it. Ion slowly building and testing out my range. Wearing multiple days. Exercise and camping. Yay. More colours please!!

No Show Socks
Tricia Williams (Portsmith, AU)
My favourite socks!

Loved these ankle socks so much I bought extra as Christmas presents for my sporting friends. So comfortable and don't get smelly, even though I'm wearing them in tropical FNQ. And they never get sucked down into my shoes like some ankle socks.

Multi-Sport Socks
CM (Central Coast, AU)
Best socks

On my third pair, they last for ages and are nice and soft underfoot. Some of the only socks that don’t give blisters. They do run small and tend to shrink a bit even with cold washing.

Ultra Zip
Loz (Canberra, AU)
Fantastic top

I have several of these tops now, and recently purchased a grey one. I've worn these and the Altitude zip tops the whole winter. And they are also my go to when I need a light layer on cooler days in other seasons. The fit is great, they feel amazing and they wear well. I prefer the higher neckline as I wear them for work with the collar unzipped so it looks more like a polo shirt. Its a bit more dressy and more practical than a crew neck, especially as I wear them over short sleeved polo shirts. And they keep my neck warmer when I wear them for running on cold mornings. I hope ioMerino continues with this design indefinitely. The only thing I'd love is some more colour choices or perhaps a range with contrasting sleeves


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: