In this question you are being asked to identify whether the company explains what tool or process they use to define what is considered a 'sustainable' material.

Where to look for this information:
- Corporate Social Responsibility report
- Company documents
- Company policies
- Company websites
- Company code of conduct
- Parent company documents (only if the parent company is linked to from the brands website)
- Parent company policies (only if the parent company is linked to from the brands website)
- Parent company websites (only if the parent company is linked to from the brands website)
- Parent company code of conduct (only if the parent company is linked to from the brands website)

Good keywords for your searches include:
- Materials
- Sustainable
- Definition
- Sustainability
- Fibre
- Sustainable Sourcing
- Sustainable Material
- Cotton
- Leather
- Polyester
- Viscose
- Wool