81 PC carpet circles for classroom in total, 4" in diameter and 9 different vibrant colors help learn colors, quickly and exactly identify sitting, queueing or standing locations.These carpet marker spots adhere firmly to carpet and could be vacuumed over without detaching from the carpet.Could be removed easily without causing damage; Flat and smooth top, easily clean right off, no crinkle; Washable, Reusable and Durable; You could also write on carpet spots for classroom with marker pen.Produced with safe, non-toxic and extremely rigid industrial grade Nylon; Hook and Loop sticks to most carpets; Not for use on shaggy carpet;Come with a drawstring bag to store and carry out.carpet dots are great for Teachers Classroom Activities, also suitable for indoor/outdoor gamse and activities, such as agility training, exercise drills, color tracking, games, dancing, sports and moreMake your activities pop, active, and organized!