The adidas UltraBoost 21 ‘Cloud White’ presents a clean and versatile color option for those seeking a high-performance running shoe. Not only does this sneaker provide enhanced energy return compared to its previous version, but it also features a sustainable design. The upper is constructed with a breathable knit material, incorporating recycled Primeblue materials made from Parley Ocean Plastic. Sitting beneath is a full-length Boost midsole that boasts an impressive 6% increase in Boost capsules compared to the UltraBoost 20. Additionally, the shoe now incorporates a new Torsion system called Linear Energy Push, which offers a 15% improvement in forefoot bending stiffness. This innovation results in a more dynamic and responsive running experience.