Our plastic glassware is either acrylic or polycarbonate. Both are top of the line crystal clear plastics for beverage ware. Polycarbonate is tougher and will last longer which is usually reflected in the price. These are excellent choices for outdoor entertaining, children, or anywhere breakage is a concern. We also have some colorful lower cost plastic glassware. Plastic glassware weighs less so it costs less to ship than traditional glass items.