Unlike other leathers, this leather is quite special because their surfaces vary thermally. Generally, the color of the fabric surface is single, but with change of the temperature, some unordinary patterns will appear——for instance, for this series, skull. Such thermal discoloration (thermalchromic) fabric became more and more popular because It's really cool if you wear a shoe that can change into different design within a day with the temperature. This kind of thermal discoloration bonded leather is smooth and a little hard, making it become comfortable and durable.