When the adidas Ultraboost debuted in 2015, it set the standard for comfort and performance in a running shoe. Each new release raises the bar, and this one is no exception. These running shoes are built for chilly conditions, featuring COLD.RDY to keep feet warm. BOOST midsole cushioning is paired with a Linear Energy Push system for a stable, responsive ride. The Continental WinterGrip Rubber outsole ensures extraordinary traction on slick streets.