Vented to allow steam to escape. Reduces dribbles and spills. Open sip-through design. Sip-Thru Lid—Perfect for hot or cold use. Helps reduce spills while allowing sipping on the go. Fits: 6 oz to 10 oz Foam Cups; Material(s): Plastic; Color(s): White; For Use With: 8X8G; 8J8; 10FJ8.