The adidas Yeezy Quantum “Onyx” is a stealthy, mostly monochromatic black colorway of the hybrid performance basketball and lifestyle shoe by Kanye West. A September 2021 release, the “Onyx” appears on the lifestyle-focused Quantum model that features reflective detailing on the heel. The Primeknit upper displays a black-and-grey swirled design. Like both variations of the Yeezy Quantum, the “Onyx” has an extended ankle collar that provides protection and stability. Adidas’s Boost cushioning technology is embedded in the black midsole for all-day comfort.