We’ve got the perfect, natural, lightweight thermal layers for your next adventure. Simply choose the activity you’ll be doing and we’ll show you the layers that will work best for you.

At ioMerino, we’re all for adventure. Big adventures, small adventures, urban adventures, wild adventures… you name it, if there’s an element of adventure in it, we’re in! Which is why we created some of the world’s most comfortable base layers. But we didn’t just create them for ourselves, that would be just plain selfish. We’re more than happy to share them with you too, for when you’re out and about on your next adventure.

So whether you’re heading out to the mountains, trails, snow, water, or pretty much anywhere, if you want to stay warm and ridiculously comfortable, make sure you pack some ioMerino base layers.

Not sure what to take with you? No problem. Just choose the type of adventure you’re planning, and we’ll help narrow it down for you. And if all else fails, email us and ask us for some advice. Our team have experience doing all sorts of things all over the world, so chances are there’s someone here who can give you some first-hand advice on what to wear.


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: