The Parley x adidas NMD CS1 PK is part of adidas's ongoing efforts to make sustainable sneakers in conjunction with Parley. The Parley x adidas styles are crafted using yarn made from recycled ocean plastic. Originally released in March 2018, the sock-like lifestyle design sports an aquatic blue and black color scheme across its Primeknit upper. The EVA plugs, half moon panel on the medial side, heel tab, and full-length Boost midsole are all dressed in white. Co-branding also appears on the pull tab.