The sandal upper is crafted with 100% recycled polyester, excluding trims. The recycled polyester in this product was created by reprocessing existing materials. Padded recycled polyester stretch satin upper. Recycled blend faux leather insock. TPR lug outsole. Heel height: 6cm/2.4in. Calvin Klein tonal logo on the heel and strap. Runs true to size. Country of origin: China. Colour: black