About the system

Overview 

This site is designed to help compare the environmental impact of fashion items more easily.

We analyse publicly available product information and compare items relative to similar products in the same clothing category. The comparisons highlight differences within a category, rather than making absolute claims about environmental impact.

How comparisons are made

Each item is assessed using available information such as:

• materials and fabric composition

• country of origin

• design features related to durability or end-of-life

• relevant certifications where disclosed

These inputs are applied consistently across products to understand how items perform relative to comparable alternatives.

What the comparisons do and do not show

The comparisons shown on this site:

• indicate relative environmental performance, not absolute impact

• apply within the same clothing category only

• take into account impacts related to climate change, habitat loss, toxin release and circularity

The comparisons do not:

• take into account labour conditions, wages, animal welfare or other ethical considerations

• represent a certification, approval or endorsement

No fashion item is impact-free. The aim is to make it easier to identify lower-impact options within a category, using the information that is available.

Independence and transparency

Products are assessed independently using a consistent methodology. We may earn affiliate commissions from qualifying purchases, but commissions do not influence inclusion or ranking.

Why Amazon

Amazon is used as the initial source of data because of the scale and availability of its product information. The approach is intended to be extensible to other retailers and brands over time.