The Contra rug is a soft and elegant addition to the décor. A special weaving technique gives the Contra rug its unique 4D effect. Contra rugs are made of lovely wool and comes in two beautiful colours and sizes.The Contra rug is a soft and elegant addition to the décor. A special weaving technique gives the Contra rug its unique 4D effect. Contra rugs are made of lovely wool and comes in two beautiful colours and sizes.