The adidas UltraBoost 21 in the colorway 'Grey Screaming Orange' offers an impressive combination of comfort and eco-friendly design. Its upper is made of breathable grey Primeknit, a fabric that incorporates recycled materials such as Parley Ocean Plastic. Breaking away from the neutral color scheme, the shoe features a striking gradient blend of orange and purple on the translucent heel counter. The Boost midsole is further improved with a redesigned Torsion system, providing enhanced responsiveness. To ensure durability, the outsole is reinforced with Continental rubber in areas prone to high wear. With its responsive cushioning and sustainable construction, the adidas UltraBoost 21 'Grey Screaming Orange' is a top pick for both athletes and eco-conscious individuals alike.