Imported Rubber sole BOOST midsole Fitcounter heel counter Sock-like fit Textile lining and insole Any time you're on your feet is a good time to wear these adidas Ultraboost shoes. Equipped with all the performance technology that runners love, they're updated with extra flair - just look at those metallic details. Energy-returning BOOST in the midsole and a foot-hugging adidas PRIMEKNIT upper make sure of it.