The adidas Ultraboost DNA is streamlined and sleek for amazing style and comfort while you run. These kicks are built to move naturally and provide support and comfort right where you need it. Seamless Primeknit forefoot is stretchy and breathable for a soft feel that doesn't irritate or rub. Four-way stretch heel works with the tongue for a supportive foot. External butterfly heel counter works with the Boost foam midsole and heel bootie for comfort around your Achilles tendon and a fit that doesn't slip. Full-length Boost midsole foam feels responsive and plush with every step. Torsion system features a supportive “bone" that flexes for a natural heel to midfoot transition. Rubber outsole delivers grip and durability on a variety of surfaces. 10mm drop.