The Nike Free Trainer 50 hasn't sacrificed style or performance, and still looks as fresh as it did in '96. The Men's Nike Free Trainer 5.0 Training Shoes offers an adaptive, supportive fit and lightweight flexibility for comfort and natural movement during intense training sessions. Deep anatomical flex grooves for a smooth ride. Mesh upper increases airflow to keep you feet cool and dry. Discount Nike Shoes Online Store. The Nike Free Trainer 5.0 is a classic tennis shoe for casual wear. EVA sockliner gives your foot a feeling of security inside the shoe. Nike Free Trainer 5.0 | Discount Nike Shoes Online Store Adjustable gore strap wraps the midfoot for secure lockdown and support. Discreet eyelets even the lacing tension across the foot, allowing for a customized fit and greater comfort.