Adidas CrazyTrain Training Shoes. New without box. Made for high-energy routines, these women's training shoes are designed to keep you going past any plateaus. A full-length boost™ midsole offers responsive cushioning so the more energy you put in, the more you get back. Designed with a secure, supportive midfoot and heel, these shoes have extra flex in the forefoot to allow for a wide range of motion. The lightweight, breathable mesh upper keeps your feet cool.