Open top accommodates both spoons and straws as well as enables lid-on soft-serve, shake and slush dispensing. High side walls allow you to over-fill frozen-treat orders. Snap-tight fit minimizes the potential for leakage when using Dart® companion foam cups. Fits: 12 oz to 24 oz Cups; Material(s): OPS - Oriented Polystyrene; Color(s): Clear; Color Family: Clear.