Create the perfect classroom calming corner with Harmony Blocks™. With generously sized blocks and peaceful colors, this area rug will be an ideal place to practice self-awareness, manage emotions, and lower stress levels. The Size C rug has 20 seats, and Sizes D and G have 30 seats each. The Carpet and Rug Institute’s Green Label Plus® Certification is an independent test that measures VOC (Volatile Organic Compound) emissions in carpet. Carpet certified as Green Label Plus® exceeds the most stringent Indoor Air Quality standards and is best suited for living, working, and learning environments.