Women's ADIDASA(R) ULTRA BOOST X :: Feel the thrill of thousands of tiny energy capsules cushioning you in the new Women's adidas Ultra Boost X running shoe. Feel right at home in a sock-like fit that wraps your feet flawlessly in comfy Primeknit material. Lift your comfort with Dynamic Arch support that adapts for your just-right fit. Run confidently knowing you've got 100% boost(TM) cushion from heel to toe in your Ultra Boost X.