A closure system for a bottle for baby food having a bottom shell part and a bottom closure ring that can be screwed onto a thread of a bottle, and a bottom partition wall above an inner thread on the edge connected to the bottom shell part blocking the cross-section of the bottom shell part, the bottom partition wall having a top side and a bottom side with a bottom flow hole ending in the first top side and in the bottom side, a top closure ring connectable to a threaded ring to fasten a teat to the top edge of the top shell part, with a top partition wall blocking the cross-section of the top shell part and connected at the edge to the top shelf part, locking elements locking the bottom closure ring and top closure ring in a rotatable, releasable manner, and an elastic sealing lip.
