Rainbow Rows Rug (Factory Second) - 6' x 12' - Semi-Circle by Carpets for Kids. Our new Corner rug is the perfect fit for small areas and an easy way to brighten up any children's space. Colors of the rainbow from red to purple mixed with 16" seating circles create a special place for each child to sit. Use the Semi-Circle shape for larger areas. Note: Factory second classroom rugs are not warrantied & sold as-is.