The slider upper is crafted from 51% certified recycled thermoplastic polyurethane (TPU), created by reprocessing existing materials. Recycled blend TPU upper. Diamond-textured strap. Recycled polyester lining. EVA and sugarcane outsole. Heel height: 2.8cm/1.1in. Ergonomic footbed with arch support. Calvin Klein 3D tonal logo on the strap. Runs true to size. Country of origin: China. Colour: blue