The NMD_CS1 Primeknit in 'Black Gum' exhibits an upper made from black Primeknit material, complemented by a white Boost midsole and a timeless gum outsole. Its laceless construction showcases a distinctive branded heel tab and black midsole EVA plugs. Originally launched in February 2017, this sneaker was introduced as part of a two-pack release alongside the 'White Gum' colorway, which gained immense popularity leading to a restock in April of the same year.