Features: • Air Ventilation System: One-piece front minimizes stitching to provide the most comfortable fit. Innovative layer perforations guaranty optimal ventilation and climate for the foot. Internal in-step mesh provides optimal stability and support. • Comfort Fit Tongue: The shoe’s tongue is perforated for better internal airflow and features a high-tech cushioning layer for increased comfort. • Transpirant Insole: Made with special anatomic design confronting to the foot for optimal comfort. Features micro-perforations for ventilation. Removable.