Best material:

We use this term to define materials with a reduced environmental impact. In fact, there is no such thing as a responsible, eco-designed or "perfect" material to be favored. We supplement the use of this term by recommending that environmental analyses be carried out to help select the "best performing" material for the products in question.

Non-renewable material:

The AGEC law (art. 72) specifically requires marketers to "implement a prevention and eco-design plan aimed at reducing the use of non-renewable resources," but there is no definition of "non-renewable resources" in this article. 

This article of law is multi-sector and not specific to the textile and footwear industry. A resource is classified as non-renewable when its rate of exploitation exceeds its capacity for regeneration. 

These resources mainly include ores (silver, copper, iron, etc.), minerals (clay, limestone, silica, etc.), fossil fuels (coal, gas, oil, peat), and water from fossil aquifers. In particular, for the textile and footwear industry, all materials derived from petroleum/fossil resources (synthetic chemicals: polyester, polyamide, acrylic, elastane) can therefore be considered non-renewable.