This SOLO L16BL-0100 translucent plastic lid measures 3.7 x 0.3 inches (Dia x H) and is suitable for use with SOLO 16-oz. and 21-oz. Cold 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. It has a precut slot for inserting a straw and push-down buttons for identifying the beverage. This translucent plastic lid is suitable for use with SOLO 16-oz. and 21-oz. Cold 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.