The collaboration between Stella McCartney and adidas introduces the women's UltraBoost Sandal 'Black Maroon', which flawlessly blends comfort and sustainability. Showcasing the innovative approach of the British fashion designer, this sneaker-sandal fusion boasts a knit upper in black and maroon hues, ingeniously crafted with Primeblue—an eco-friendly material comprising recycled high-performance elements like Parley Ocean Plastic. Additionally, the inclusion of an open vamp design ensures optimal airflow, while synthetic leather overlays and a robust heel frame offer extra support and stability. Moreover, the shoe incorporates a full-length Boost midsole, fortified by a Continental gum rubber outsole for enhanced traction and durability.