ICYMI: A Designer’s Guide to Bio Material Terms

The language of sustainable materials is getting more complicated. Terms like bio-based, bio-sourced, bio-attributed, and USDA BioPreferred® are increasingly common in product literature, but they don’t necessarily mean the same thing—or provide the same level of verification. In this ICYMI episode of I Hear Design, we revisit an interiors+sources article that breaks down the terminology designers and specifiers should understand when evaluating renewable material claims. Learn how ASTM D6866 testing helps verify bio-based content, how supply-chain tracking differs from lab verification, and why a higher percentage of renewable content doesn’t always tell the full sustainability or performance story. It’s a practical primer for design professionals who want to look beyond marketing language, ask better questions, and specify bio-based materials with greater confidence.