The New Balance 327 Black Castlerock comes in a black Castlerock color scheme. The New Balance 327 Black Castlerock has a black upper with a Castlerock grey "N" branding panel on the side. The upper is constructed from leather, nylon, and suede. The shoe's white midsole is made of lightweight foam that provides cushioning. The outsole is composed of a rubber cup sole that offers grip. For a comfortable fit, the sneaker has a slightly elevated heel. The shoes' lacing system is made to provide a secure fit. The New Balance 327 Black Castlerock was made available on October 5th, 2020, and retailed for $90.