Features a variety of Major League Baseball teams and mascot logos for all 30 Major leagues. These shades are perfect way for fans to showcase team loyalty in their dens, bedrooms, and family rooms. Choose from three materials Basics Light Filtering: 100% Polyester - Back side of the fabric is unprinted for a neutral street side appearance. Basics Blackout: 100% Polyester - White to the street side. EcoGreen Screen - 5% Openness: 100% Polyester PVC Free - Back side of the fabric is unprinted for a neutral street side appearance.