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Moderate

Material Deep Dive

Merino Wool

Merino wool shows strong end-of-life and use-phase performance but scores lower overall due to very high farm-gate greenhouse gas emissions from enteric methane and moderate pollution and chemical impacts from pest control and processing.

Animal

Virgin

End of Life

4 months

100/100
Chemical Use

Moderate

60/100
Pollution

Moderate

60/100
Water Usage

384 L/kg

99/100
Carbon Footprint

24.9 kg CO₂/kg

0/100
Considerations

Very high carbon footprint from sheep farming—mainly methane

Chemical treatments for parasites are common in conventional farming

Processing can involve heavy chemical use and water pollution

Some farms practice mulesing—look for RWS or ZQ certified for animal welfare

Consider recycled merino as a lower-impact alternative

Strengths

Fully biodegradable with no microplastic concerns

Durable with good shape retention over time

Naturally resists odours, requiring less frequent washing

Renewable resource with annual shearing

Carbon Footprint Analysis

0/100

Merino Wool produces approximately 24.9 kg CO₂-equivalent per kilogram of fiber.

The Data

Carbon Footprint

24.9 kg CO₂/kg

FSI Carbon Score

0/100

Sources: Higg Materials Sustainability Index, Textile Exchange Preferred Fiber Report

Sustainability Breakdown

Microplastic risk

None

Care level

Easy

Available certifications

Responsible Wool Standard (RWS), Global Organic Textile Standard (GOTS), OEKO-TEX Standard 100, OEKO-TEX Made in Green, Bluesign

Key properties

temperature-regulating, moisture-wicking, soft, non-itchy, hypoallergenic, naturally odor-resistant, water-repellent, flame-retardant, natural UV protection, elastic, wrinkle-resistant, easy care, lightweight

Common uses

base layers, athletic wear, socks, outdoor apparel, sweaters, scarves, home textiles, luxury knitwear

Also known as

fine wool, merino fleece, virgin merino wool, greasy wool, clean wool, premium wool

Merino Wool quick guide

Last updated: January 2025

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