Brand New Stella McCartney Prime Blue sz 7.5. Color block, Black & silver. Cutout detail. Rubber sole • Fabric: Performance knit • Colorblock design, Rubber trim, Removable insole. Excellent! The new collection uses PRIMEBLUE, a high-performance recycled material made in part with Parley Ocean Plastic, and PRIMEGREEN, a series of high-performance recycled materials, as part of adidas’ and Stella McCartney’s shared ambition to end plastic waste. Many of the pieces are also made with READY technology that protects the wearer from the elements.