Nike Women's Flex Trainer 4 SneakerTextile and Synthetic Imported Rubber sole Shaft measures approximately low top from arch LIGHTWEIGHT FLEXIBILITY: Built for low impact workouts and circuit training, these women's shoes are designed for flexibility and traction. DYNAMIC CONTAINMENT: Synthetic upper and heel strap of the Nike shoe adds support and containment. DURABLE DESIGN: Foam midsole is durable enough to double as the outsole, dramatically reducing weight. Rubber in high wear