Spot On Carpet Markers help students quickly identify where to sit or stand. These floor markers stay on strong but can be removed easily and used again and again. The write-on/wipe-off surface is perfect for writing student names or numbers. The carpet markers attach firmly to your carpet—no slipping. They can be removed easily without causing damage. Measures 4″ diameter. Each pack includes 12, 2 each of 6 colors.