Merino Wool Base Layers for Cycling and Mountain Bike Riding 

Here at ioMerino, we love riding our bikes - whether it be on the roads, the trails or the mountains. So if you ride a bit or a lot, you need to add our natural, high-performance merino layers to your kit. 

Made from superfine Australian Merino Wool, our high-performance cycling base layers and accessories are designed to keep you comfortable for longer on all of your biking adventures.

We know cyclists love lycra, so we won’t try to come between you and your go-to gear, but you'd be nuts not to consider letting our lightweight layers come between you and your lycra. They are so soft we guarantee you'll be chafe, itch and scratch free on even the longest, toughest rides. 

Our cycling layers offer natural breathability, odour resistance and are thermo-regulating, which means you'll stay cool when it’s warm, and warm when it’s cool. Whether it’s raining or you’re sweating up a storm, you'll be comfortable on your bicycle, even when you're wet. 

This range of high-performance Merino Base Layers and accessories has been specifically designed with a cyclist in mind. Made with our lightest weight fabric, the super soft next to skin feel and contact fit will sit perfectly under a standard cycling kit. No weight and no bulk. They are so light you’ll hardly even know you’re wearing it. Add some to your kit today! 

If you'd like more info on the high-performance layers we suggest for cycling, click here. 


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: