From Ryka, the Women's Lounge Zip Washable Wedge Sneakers feature: Textile upper with center gore for adjustable fit Side zipper closure Fabric lining for softness inside and out Anatomical insole for arch and heel support with partially recycled EVA Compression-molded ACTIVfoam wedge heel for soft cushioning Compression-molded EVA outsole for lightweight comfort MACHINE WASHABLE: Machine wash on cold and air dry WEIGHT: 164g/5.8oz per shoe HEEL-TO-TOE DROP: 16mm Imported.