The Parley x adidas UltraBoost 21 ‘Carbon Sandy Beige’ dresses the performance running shoe in earth-friendly materials. Secured with a cabled lacing system, the black Primeknit upper is composed of 50% recycled polyester and 50% Parley Ocean Plastic, featuring upcycled plastic waste gathered from coastal communities. The sock-like build is supported by tonal no-sew overlays and a teal-colored TPU heel counter. Responsive cushioning arrives via a full-length Boost midsole, reinforced underfoot by a grippy Continental Rubber outsole.