The Parley x adidas Ultra 4D Uncaged ‘Black Blue Spirt’ features a unique design that combines sustainability and futuristic innovation. The latter is embodied by the 3D-printed lattice midsole, formed with a blend of liquid, light and oxygen. Up top, the Primeknit build incorporates yarns made with recycled Parley Ocean Plastic. A series of wavy aqua fibers wrap around the all-black upper, treated with a reflective finish for added visibility in low-light conditions.