ONDA 4 CALF LTH Women's flat sandal in black leather with a regular fit. Comfortable, trendy, and versatile, it features studs of various shapes and styles on the soft, wavy design of the upper. This lightweight and fashionable model is perfect for pairing with any of your summer looks. This model is built with Stonefly Second Skin® technology that makes the shoes soft and light, just like a second skin. EVA sole, heel height (cm): 4.