The BNIB Nike Air Jordan 4 Retro x UNDEFEATED (2025) in size UK 9, US 10, and EU 44 is a stylish and highly sought-after trainer collaboration between Nike and UNDEFEATED. This mid-top sneaker features a unique green colourway inspired by the retro theme, with a fabric lining and foam insole for comfort. The rubber outsole provides durability and traction, making it perfect for both casual wear and sports. This limited edition shoe combines the iconic Air Jordan 4 model with the signature UNDEFEATED design, making it a must-have for sneaker enthusiasts.