Corduroy is a 90% Polyester / 10% Nylon fabric that, like all Innovation fabrics, is enhanced with additional backing for extended life time. Corduroy fabrics have been tested for durability and received a Martindale rating of > 100,000, meaning Corduroy is rated for heavy use. In addition to durability, Corduroy is OkeoTex certified, meaning it has been tested for harmful substances certified to be harmless for human health.