A Kilim (or Kelim) is a flat tapestry-woven rug, rather than knotted, so they do not have a pile. Traditionally produced in countries of the former Persian Empire including Iran, Azerbaijan, the Balkans and the Turic countries of central Asia. Kilims can be purely decorative or can function as prayer rugs. Modern Kilims are popular floor-coverings in Western households. The were tribal rugs, using simple motifs for fertility, protection and good luck. Kilims have become increasingly collectible in recent years, with quality pieces now commanding high prices.