The upper is made with high-performance fiber made from Parley Ocean Plastic, plastic waste recovered from the ocean. This water-repellent PRIMEBLUE knit upper provides a softer fit and better breathability than the previous model. Leather parts are used on the sides to prevent bending during walking and to restrict lateral stretching only during the swing. This achieves the highest level of comfort while maintaining tour-level grip and stability. Thank you for viewing.