Condition
Persian rugs are designed to be durable and to be used in heavy traffic areas. Signs of wear on the old and antique rugs are not only expected but add to the charm of these rugs and could be enjoyed even in heavy traffic area. All of our rugs are professionally hand washed before import. However, some dust may still accumulate during shipping process. Simple vacuuming before use is suggested.

Knot Per Square Inch or KPSI
Knot density or KPSI refers to the number of knots per square inch in a hand-woven rug. Knot density is measured by counting the number of knots per linear inch along the warp, and the weft. Both are visible on the backside of the rug.
Knot density is one of the criteria to determine the quality of the rug but is not the only one.  KPSI is mainly used for city rugs.

Tribal rugs and City rugs
Basically there are two type of rugs in Iran. City rugs, which are more formal in design and made  with higher knot density. Tribal rugs are made in Tribes or villages which are more casual and geometric in design and made by bigger knots, such as Heriz, Hamedan and Bakhtiari rugs. Tribal rugs are consider to be very durable and made for heavy traffic area.