NUK First Choice Learner Bottle Replacement Non-Spill Silicone SPOUT 1pk. This silicone spout is made of a soft material and helps teach babies how to drink independently. It includes the NUK Anti-Colic AIR SYSTEM which minimses the harmful swallowing of air. Easy to handle and clean and fits all NUK FIRST CHOICE Learner Bottles and Active Cups. This product as well as all the NUK products are made in Germany under stringent quality testing and product development in conjunction with scientists & health profeesionals.