The Engima SmartStrand Silk Collection by Karastan is a beautiful and luxurious rug. This collection of rugs are made of the Smartstrand Silk fiber and touches of soft shimmering viscose for some added luster. SmartStrand silk is an eco friendly corn based resource that has built in stain resistant properties that will never wear or wash off. This rug is very durable and great for higher traffic use. A great price for the quality and softness. Available in various sizes.