When the adidas Ultraboost debuted in 2015, it set new standards in comfort and performance. Each new release raises the bar and this version is no exception. The running shoe is equipped with COLD.RDY and keeps your feet nice and warm during runs on cold days. The BOOST midsole in combination with the Linear Energy Push System ensures a stable, responsive running feel. And the Continental WinterGrip rubber outsole guarantees a secure grip even in wintery, slippery conditions.