These sneakers are made of ChromeFree leather, which is tanned using an energy-efficient process that also reduces the use of water and salt, then finished with cute gum soles and cornflower-blue accents. Use them to dress up a pair of sweats or balance a feminine sundress.Upper: leather; Insole: amazonian rubber, E.V.A., and cotton; Outsole: Lining: polyester; Lining: polyester