The Uncaged edition of the Ultra Boost removes the lace cage seen on other iterations of the runner, leaving only a full Primeknit upper. Support is provided by a reinforced knit construction and a stabilizing Fitcounter at the heel, with an elastic collar promoting a secure fit. The ‘White Tint’ colorway dresses the silhouette in tonal shades of grey and white, while the Three-Stripes are formed by thicker stitching along the midfoot. A Boost midsole provides cushioning and a Continental rubber outsole delivers traction.