UltraBoost 4.0 'Grey Four'

Imagine having over 3000 energy capsules in your shoes propelling you forward no matter your sport of choice. Well, that’s precisely what adidas has done with the Ultra Boost 4.0 'Royal.' The runner features a grey and green Primeknit upper with contrasting grey Three-Stripes branding on the side and white detailing on the heel cap. The sneaker also boasts a Continental rubber outsole and a full-length Boost midsole.