The soft silicone mouthpiece/non-drip tube is safe for the baby’s delicate gums. It has a built-in membrane that prevents spills and reduces fluid leakage. The silicone tube is connected to a plastic straw, which ends at the bottom of the water bottle. This makes it easier for the child to drink the drink without having to tilt the water bottle. The mouthpiece fits water bottles: 56/510, 56/515 and 56/516. In the package 1 piece.