The seventeenth version of this Nike Free Trainer 50 shoe gets a modern makeover. The Men's Nike Free Trainer 5.0 Training Shoes White/Volt/Black offers an adaptive, supportive fit and lightweight flexibility for comfort and natural movement during intense training sessions. Durable rubber outsole for a smooth ride. Elastic at the ankle for a secure fit and easy on and off. Nike Official Website Free Shoes. Kick it in gear on any surface with the Nike Free Trainer 5.0 shoe. 4D Foam® molds to your foot providing custom fit cushioning. Nike Free Trainer 5.0 | Nike Official Website Free Shoes Full-length Duralon with vertical and horizontal flex grooves for traction. Asymmetrical energy rail helps guide your foot through a smoother, more natural transition from heelstrike to toe-off.