For a high-quality and economical solution to your hot beverage cup lid needs choose Dart®. To reduce the potential for spills these lids feature Lift n Lock for easy opening and reclosure. They re also vented to allow steam from your hot drinks to dissipate so that your cup remains rigid and retains its sturdiness. Overall these lids are extremely convenient for people on the go. Straw-Slot. Fits: 12 oz to 24 oz Foam Cups; Material(s): Plastic; Color(s): Translucent; Color Family: Clear.