The canopy is made of polyester and steel ribs. This easy set up shelter protects you and your team, anytime, anywhere. The side zippered windows are for easy airflow and visibility. If you’re spending your days at the field, or the beach, stay shaded with the Sport-Brella. Protect yourself from rain, wind, or sun with the Sport-Brella. The water repellent structure will keep you dry and relaxed on rainy game days, or cool from the warm summer sun at the beach.