In December 2016, Ronnie Fieg, the Founder of Kith, marked the inauguration of his exclusive pop-up store in Aspen, Colorado by releasing his inaugural Ultra Boost Mid called 'Aspen.' The design of this sneaker aptly captures the essence of the region's renowned mountain fashion with its sweater-like Primeknit upper and multicolor laces. The cage-less construction, along with the sock-fit collar and responsive Boost sole, ensures a snug and comfortable fit regardless of the weather conditions.