A hand-knotted rug is an area rug type made by individually tieing thousands of knots, typically using high-quality wool. Once knots are completed on the rug, the fibers are shaved down the accentuate the final design. Hand-knotted rugs take longer to make and are usually more expensive. Hand-woven rugs are also known as flatweave rugs and have low to zero pile. Hand-woven rugs are woven on a loom and are typically reversible.