First launched in 2015, adidas Ultra Boost is adidas' strongest running shoe, whether from the shape design to the revolutionary sole transformation, Ultra Boost has redefined people's original understanding of running shoes. Ultra BOOST does not have the tongue design of traditional running shoes, but uses Primeknit weaving technology to completely integrate the tongue and upper. The overall upper is like a second layer of skin, bringing excellent comfort to the feet during running. Ultra Boost adopts adidas cushioning Boost technology, and the finer Boost particles bring super energy feedback and shock absorption. The signature torsion system, Torsion System, is completely embedded in the midsole and extends from the forefoot to the heel, making the Ultra Boost even more stable.