Women's BOOST running shoes made to keep feet warm in cold conditions Midsole drop: 9 mm (heel: 24 mm / forefoot: 15 mm) CONTINENTAL WINTERGRIP RUBBER OUTSOLE: The outsole gives the perfect traction on all surfaces in all wet and cold conditions; Officially licensed Continental product CAN'T STOP. WON'T STOP: The incredible energy return of adidas BOOST is created by fusing together energy capsules, giving you the power to keep your feet moving MADE WITH RECYCLED CONTENT: Made with a series of recycled materials, this upper features at least 50% recycled content. This product represents just one of our solutions to help end plastic waste