From Ryka, the Women's Viv Next Knit Lace Up Washable Sneakers feature: Soft engineered knit upper with synthetic accents Padded heel Lace up for secure fit Unlined Anatomical insole with extra arch support and heel support plus QMassage bumps for extra comfort Durable molded rubber cupsole outsole MACHINE WASHABLE: Machine wash on cold and air dry WEIGHT: 272g/9.6oz per shoe HEEL-TO-TOE DROP: 10mm Imported.