This SOLO LB3161-00007 white polystyrene lid measures 3.7 x 0.3 inches (Dia x H) and is suitable for use with SOLO 16-oz. Paper Hot Cups. (Dia is diameter, the horizontal distance from one side to the other; H is height, the vertical distance from bottom to top.) The lid is made of polystyrene for strength and flexibility and has a scored tab that can be pushed back and locked in place to allow access to the beverage. This white polystyrene lid is suitable for use with SOLO Paper Hot Cups in a variety of food service settings.SOLO manufactures disposable plastic, paper, foam, and post-consumer recycled content cups, plates, and other products for food and beverage service. The company, founded in 1936, is headquartered in Lake Forest, IL.