The No-Spill™ Soft Sipper Spout by Nûby™ is made from the same soft silicone as our Nûby™ nipples. Because it is similar in texture, transitioning your child from bottle to cup feeding is a snap. And because it's from Nûby™, you can be assured that it won't leak. That's because the Soft Sipper Spout features a built-in pressure sensitive valve. As your child drinks, fluid flows out of the spout. As soon as your child stops, this special valve closes ensuring a leak resistant sipper. These spouts serve as replacement spouts for the Nûby™ standard neck 3 Stage Grow Nurser™ Feeding System as well as other standard neck nursers.
**Fits all Nûby™ standard neck bottles - not for use with Nûby™ cups