The mats made from Cyperus pangorei (Korai in Tamil) are called "Korai paai" in Tamil and can be found widely in the households of Tamil Nadu, usually in the size 6 feet by 3 feet. They are usually dyed in colors of bright red, green or purple, resulting in patterns. These mats differ in their levels of flexibility, fineness and price. Pattamadai paai (named after the region Pattamadai, near Tirunelveli) is generally considered the finest "paai". Many of these Indian grass-mats are examples of elegant design, and the colors in which they are woven are rich, harmonious and effective. Mats made from Vandavasi are also famed and used commonly. These days, along with these natural grass mats, one can also find plastic mats, which are easier to maintain and are cheaper. This class of work obtains in India, Japan and other Eastern countries. Vast quantities of coarse matting used for packing furniture, heavy and coarse goods, flax and other plants, etc., are made in Russia from the bast or inner bark of the lime tree. This industry centres in the great forest governments of Viatka, Nizhniy-Novgorod, Kostroma, Kazan, Perm and Simbirsk.