From Ryka, the Women's Viv Vinyl EVA Slingback Sandals feature: Sea and chlorinated water friendly molded textured PVC upper Adjustable hook-and-loop backstrap Unlined Molded EVA footbed Dual density EVA outsole Approx. 1.38" platform height Weight: 222g/7.8oz per shoe Heel-to-toe-drop: 13mm Imported.