UltraBoost 4.0 'Royal'

adidas has released a new iteration of their flagship running Boost silhouette to make runs last longer. The Ultra Boost 4.0 'Royal' features a white and Royal Blue Primeknit upper with contrasting white Three-Stripes branding on the side and Royal Blue detailing on the heel cap. The model also boasts a Continental rubber outsole and a full-length Boost midsole.