Sippy Cup Conversion Kits for Avent Natural Baby Bottles, 2-Pack | Soft silicone spouts, 360° weighted straws and easy-grip handles; leak-resistant, BPA-free, dishwasher safe, ages 6m+.

Works very well with Phillips bottles! My baby used it on the first try and I get to reuse bottles instead of buying sippy cups! I need more!

These fit perfectly on our advent bottles. It is a good first step for trying to move our baby from a bottle.

Great for transitioning from bottles, but the straw part comes loose after several months. I guess they're supposed to be a temporary thing

Estoy encantada con estos chupones les viene a las mamilas de Philips Avent, definitivamente los volvería a comprar, recomendados

Fits on the Philip avent natural bottles no problem. Glad it came with a cleaning brush because my others would not fit in the weight. Easy to clean. We've been struggling to wean my 1.5 year old off the bottle at night and this has been a good compromise - she takes it with no complaints.

Fits wide mouth bottles. Worked great for my daughters avent bottles. The cool thing about this set up is that the liquid fills up the nipple part and they dont need to suck so hard. It can cause leaks.

It doesn’t fit the bottle.

These are absolutely amazing! They are a perfect fit for our Phillips advent bottles. They converted the bottles easily into a sippy cup. It’s not a bad price for 2, and they work very well. They don’t leak from what I can see, we have used the quite a bit since getting them.