The mindful MATERIALS (mM) label is a physical sticker placed on product binders in resource libraries to communicate information about manufacturer transparency and optimization. Labels are designed to facilitate identification of products whose manufacturers disclose information about their impact on human health and the environment. Products that display mM labels are part of the mM library, a free online database of sustainability information for design professionals and manufacturers. To be eligible for the mM library, manufacturers must disclose information that satisfies established standards for at least one of six categories: VOCs, material ingredients, environmental profile, material sourcing, social responsibility, or other transparency information. The mM label is not a materials certificate; it simply indicates a manufacturer’s disposition towards displaying transparency data. Manufacturers are responsible for downloading, filling out, and affixing labels to their product binders.