[Take lid 4 fully functional upgraded cup lid] 4/4L/4XL universal: food grade Silicone breathable straw plug

1. Purpose: Use the upper lid (PART A) with lid 4. Open it to directly insert a thin straw or discharge the air in the cup. You can also fasten the end of the opening cap (PART F) to prevent the straw cap (PART E) from falling off. 2. Material: Made of food-grade Silicone (Take the lid 4 customized version) 3.Quantity: 1 piece