Stella McCartney's high-fashion design and love for the planet combine in this premium running shoe made in collaboration with Parley for the Oceans that uses recycled materials from beaches and coastal communities. It sports a full-foot boost midsole for superior energy return and trampoline-like cushioning, as well as a smooth heel strike-to-midfoot transition with the Dual TORSION SYSTEM. It's finished with a flexible STRETCHWEB rubber