Optimum support, natural flex and next level airflow. These women's Free TR 7 trainers from Nike have got everything you need to nail your next session. Made with lightweight, breathable mesh, a moulded heel cage keeps you stable during sprints, squats and lifts, while a tri-star outsole means flexiblility, stability and support that keeps the pressure off your feet. Don't work out without 'em.. Material: Textile & Synthetic Upper/Synthetic Sole