The adidas Ultra Boost 2021 Triple Black is designed for performance and style. Its upper features a sleek black Primeknit construction, ensuring flexibility and comfort, while being made from recycled materials, including Parley Ocean Plastic. The shoe boasts Boost cushioning with 6% more capsules than previous models, offering enhanced energy return. The Linear Energy Push technology further improves responsiveness by adding 15% more forefoot stiffness. Released on February 4, 2020, this stealthy runner is essential for anyone seeking superior cushioning and a responsive ride.