This report is intended to guide the use of the Certified to LAST canvases. The concept of LAST establishes the fundamental content, trust and structure of an information system needed to verify the promises and claims about individual product’s circularity, durability, and sustainability. This refers to claims about the product’s durability lifetime, accessibility to affordable service and spare parts, resource efficiency, and other sustainability claims about the materials and resources. These claims are classified into four groups, Long lifetime, Accessible service and spare parts, Sustainable materials and life cycle, and Transparent information, abbreviated into L, A, S, and T, and integrated into a certified market competition platform called Certified to LAST.