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🍼 Sip smarter, transition smoother—because your baby deserves the best!
The BelBeyo Straw Cup Conversion Kit is a BPA-free, FDA-compliant upgrade for Comotomo baby bottles that converts them into spill-proof straw cups. Featuring soft silicone spouts, single-piece weighted silicone straws, ergonomic handles, and cleaning brushes, it ensures safe, mess-free sipping and easy cleaning. Designed for babies 6+ months, it supports eco-conscious parents by reusing existing bottles and is independently tested to meet strict U.S. safety standards.













| ASIN | B08MCLVGG8 |
| Age Range Description | Baby |
| Best Sellers Rank | #15,086 in Baby ( See Top 100 in Baby ) #107 in Baby Bottle Nipples |
| Bottle Nipple Type | Vented |
| Bottle Type | baby bottle |
| Brand | BelBeyo |
| Capacity | 8 ounces |
| Color | Green |
| Customer Reviews | 4.5 out of 5 stars 225 Reviews |
| Dish Washer Safe | Yes |
| Is the item microwaveable? | No |
| Item Weight | 0.13 Kilograms |
| Liquid Flow Speed | Variable Flow |
| Manufacturer | BelBeyo |
| Material Type Free | BPA Free, Lead Free, Phthalates Free |
| Number of Items | 1 |
| UPC | 757350825714 |
| Unit Count | 2.0 Count |
K**H
Worth the money
I love that I got to reuse the bottles that I used when my baby was first born. The attachments fit perfectly with no drippage. Also, when the bottles get squeezed no liquid comes out of them. These attachments are so perfect! They also come in a nice travel container with a small scrubby brush to clean out the tube.
K**E
Highly recommend
Highly recommend
K**E
LOVE THIS
I love this product. It is so good! Fit our comotomo bottles perfectly. We used these while teaching my son how to use a straw & introducing water to him. Very durable, easy to clean. Personally I chose not to use these with milk. We only used them with water. Great quality and a good price!
H**H
Quick to learn
Our babies first sippy cup and it seems like he figured out how to use it quickly!
J**Y
Very hard to clean
This is a great product because it encourages the baby to transition to a sippy cup. However, this is very clumsy to clean and can lead to a lot of bacteria building up
M**T
It works ..
I like it but maybe because of the quality the straw rips so eventually it shrinks and I have to keep buying.
K**E
Doesn’t Spill!
Best transition without buying a new bottle! I LOVE this option and it doesn’t leak when they drop it!!! Best transition cup and great for speech development.
J**N
Easy transition
I’m absolutely in love with these straw cups for the como tomo bottles! It’s been great to be able to use the same bottles so it’s all similar and easy for my baby. They work great and my baby likes to use it during the day, as we are cutting down of bottles.
C**O
La mejor opción
Lo máximo para seguir usando los vasos sin que sea biberón
Trustpilot
1 month ago
1 month ago