They're made with mechanical motion stretch to enhance the performance of the fabric without incorporating a spandex yarn. This provides the lasting durability of a polyester/cotton blend, with the movement of a stretch fabric.Features: Tag FreeFit: Regular FitFiber Content: 65% Polyester, 35% CottonFabric Description: KnitLeg Style: Flare LegCare: Machine WashCountry of Origin: Imported.