From Ryka, the Effortless Stretch Knit Washable Slip On Sneakers feature: Stretch engineered knit upper Padded heel Slip on fit with heel pull tab for easy on/off Fabric lining Anatomical insole with extra arch and heel support made from partially recycled materials Rubber gum outsole partially made with post-consumer recycled materials Machine wash on cold and air dry Approx. 222 g/8.0 oz per shoe weight  approx. 9 mm heel-to-toe-drop Imported.