the B571 Zipper Flare Pants are designed with our new B fit, which is slim through the thigh and features a slight flare at the leg opening and is constructed from acid washed black denim, and finished with exposed zippers on the wearer's front and back with paneling behind for a flare finish. details flare at leg opening 98% cotton 2% spandex model is 6’1, 140 lbs and wears a size 30 note: this style contains stretch and is more relaxed than our standard b fit denim. for a more consistent fit we recommend sizing down for a consistent fit with other b fit denim.