Engineered mesh upper breathes elegance while keeping you cool and dry. External back heel counter for stability and comfort. Adaptive stability through the 4D Guidance System for balanced steps. Rearfoot PureGEL technology cushions every landing with featherlight comfort. Eco-friendly luxury with FF Blast Plus Eco cushioning. OrthoLite X-55 sockliner elevates every step. Lace-up closure for a perfect fit. Running. Training. Cross-training. Athletic. Workout. Track. Jogging. Walking. Exercise. Sneakers. Gym.