Pack includes 4 pairs of U-shaped pants, each in a different color. Elasticized waist. U-shaped inseam leaves more room for babys diaper. Soft cotton jersey, with comfortable stretch. Faux-denim french terry pants only: 51% cotton, 43% polyester, 6% spandex. Easy pull-on style. Newborn U-shaped pants sit at waist. Relaxed hip and thigh. Tapered leg. machine wash according to the care instruction label spandex 4% cotton 96%