Horses definitely benefit from equine curtains. Riding arenas are often in need of proper air distribution systems. Natural ventilation plays a key role in keeping people and horses comfortable by reducing humidity and increasing airflow. Adding curtains to your riding arena will allow you to control your airflow creating a more comfortable riding environment. Check this article at psu.edu.
Curtains for Barns offers different styles of curtains, Clear View Curtains, Double Roll Up Curtains, Drop and Roll Curtains, and Center Roll Up Curtains. All of these curtains will improve ventilation in your building.