We’re committed to using materials that cost the earth less and do more for human well-being.

We can help save the planet by changing fashion. We can improve our health by reevaluating our clothing choices.

Inner Mettle is a springboard for fashion innovation, partnering with the most creative minds in industry. Our products are made from unique fabrics, created from natural, recycled, or innovative materials. We take the fabrics you know and love, and those you never imagined wearing, to a whole new level of functionality.

Our Materials

Bio-based polyamide

Performance meets well-being. In the past only petroleum-based polyamides could offer the high performance qualities that dominate our activewear collections.
Bio-based polyamide fabric uses the unique qualities of the castor bean plant to create a natural alternative for your highest impact workouts. It’s sustainable, free from microplastics and harmful chemicals!
• Dries 50% faster than standard polyamides
• natural odor control
• low moisture absorption
• thermal isolation
• lightweight & super stretch
• eco friendly water repellency

Milk blend

40% Milk fibre by Duedilatte, 60% micromodal fibre by Lenzing
Kind to the environment and to skin. Our milk blend fabric is 100% manufactured in Italy and employs the principles of circular economy to make use of valuable resources that would otherwise go to waste.
Uses surplus from the Italian agri food sector
- water and energy savings
- very low CO2 emissions.
- completely natural
- breathable
- hypoallergenic
- thermoregulating

Hemp blend
(coming soon)

GOTS & OCS certified Hemp & cotton blend. 45% hemp, 55% organic cotton.

Hemp is one of the strongest and most durable of all natural textile fibres. 100% hemp clothing could last up to 30 years with proper care. Hemp also doesn’t need much water to grow! In fact hemp uses only 5% of the water required to grow cotton! Apparel made from hemp and organic cotton is free from added chemicals that harm human health and that of the environment.

High durability, retains shape well
- Gets softer with each wash Breathable and insulating
- Moisture wicking
- Highly resistant to bacterial growth and microbes
- Natural UV filtering properties
- No toxic chemicals or pesticides

Silver & copper

Metallic yarns, such as copper and silver, when added to fabrics can help to fight odor and microbial transmission. Meaning that your most essential apparel can serve you better.

IM Virobac

When we decided to launch a practical solution for an anti-microbial fabric, we put numerous fabric coating and infusion technologies to the test against Human Coronavirus 229E. We found out that not all fabrics made with copper are equal, surprisingly higher copper content did not mean better performance.

The IM ViroBac copper fabric successfully destroyed 97.5% of the virus within 30 minutes. Washability and the loss of copper over time was also a concern so we tested for loss of copper over 50 washes to understand the pattern. IM ViroBac provided excellent washability with negligible loss of copper over its usable life.

IM ViroBac face cover is not a medical product or a filtration device, you’ll need to wash it regularly. Follow your local authorities' health and safety guidelines. And use #IMViroBac to benefit from a little extra science.

Sea algae blend
(coming soon)

Mindful Manufacturing

We produce the majority of our apparel in Europe and North Macedonia where manufacturing is highly regulated. R.N. Macedonia has a long tradition in the textiles industry and is closely connected to Europe. R.N. Macedonia’s textile industry is the second largest export industry in the country and exports mainly to EU countries.


The link between clothing and health

What if your clothing could improve your health rather than hinder it? An idea that’s been brewing at Inner Mettle HQ for quite some time!

The majority of clothing is treated with harsh chemicals. And some of it comes into being via very chemical heavy and toxic processes.

Synthetic petroleum based materials such as polyester and nylon are swimming in toxins and non-organic natural fibres are treated with pesticides. Then there’s the extra chemicals required for sought after garment attributes such as bright colours, anti-wrinkle, anti-odor, waterproof…

Toxins in our clothing are widespread and it’s hard to isolate the effects. That said, here are numerous studies that have done so. View our research page.


The apparel industry is dirty

The current financial model of the fashion industry fails to
take into account the cost to our environment and human health.


Annually we see that fashion

...Contributes to 10% of total global carbon emissions
...Leads to half a million tons of plastic microfibers in the ocean
...Uses around 93 billion cubic meters of water
...Contributes to 20% of all wastewater
...Results in a huge amount of waste, with 87 % of clothing fibre inputs being incinerated or disposed of in landfill.

Source: Worldbank

The global fashion industry is a large contributor to climate change


“Between 2030 and 2050, climate change is expected to cause approximately 250000 additional deaths per year, from malnutrition, malaria, diarrhoea and heat stress alone. The direct damage costs to health is estimated to be between USD 2-4 billion per year by 2030.”

Source: World Health Organisation