According to Cheryl Simmons from The Spruce, “The Carpet and Rug Institute (CRI) has created a labeling system to provide consumers with guidance and peace of mind when purchasing a vacuum. CRI tests vacuums on three criteria: soil removal, dust containment, and carpet appearance retention. If the vacuum meets CRI’s standards on all three criteria, it is awarded the CRI Seal of Approval/ Green Label for vacuums.”