Water Bottle Spout Adapter for Kids, Babies, & Adults - 3-Pack Set, 98% Leak-Proof, No-Spill Design, BPA-Free, Reusable, & Easy-to-Use, (Sage, Sand & Peach) - 4mm Slit

This product does a great job doing exactly what it advertises it will do. I bought these mainly to alter water bottles for my daughter when we're on the go. These do seem to fit in every single bottle that I've tried them on, they're easy to drink from, and close well. They're also easy to clean. Unfortunately, plastic water bottles today are extremely flimsy, which does make it difficult to insert these without the bottle crumbling since it is such a snug fit. The nice thing is these are easy to travel with, cute colors, and works pretty universally.

I love this! I wish I would've had it sooner. They are pretty much spillproof! Work well and bottles. Easy to use and great for small children

One of my BEST amazon purchases! My 2 year old often wants my bottle of water and we all know that would just lead to an outfit change and a mess. I ordered these spouts with low expectations but he loves them! I also love the ease of use and how they are completely mess free! The spout fits securely in the water bottle and I wish i would of purchased these sooner! If you have a toddler that wants to be a "Big Kid" or more independent, i highly recommend!

I have a two year old that loves drinking out of water bottles because mommy does… so this makes it way less messy! And you can cover it when not drinking it!

Grandkids. No more spills

I love these so much! My daughter drinks so well out of them and no back wash! Win win! They fit in almost all bottles and we take them when we are traveling. Makes for no mess when trying to share a quick drink with a crazy toddler!

Not that best flow coming out, hard for me as an adult…my son has a difficult time

This worked perfect for my toddler and water bottles. This is a great transition piece from sippy sup to cup/bottle.