Bonding Denim USED Riders Tapered Pants 71% Cotton, 28% Polyester, 1% Polyurethane (Lining: 95% Polyester, 5% Polyurethane) These pants are very warm with excellent heat retention. Both the outer and lining fabrics have considerable stretch. Made with polyester-blend denim, the surface has a smooth, modern impression. These are not ordinary "denim" pants, but feature three-dimensional "riders details" created by darts and paneling, making them a very useful piece even when incorporated into simple outfits.