








🍼 Sip Smart, Grow Confident — The Ultimate Baby Bottle Upgrade!
The Straw Cup Soft Spout Conversion Kit by ROPOSY converts Philips Avent Natural baby bottles into versatile straw cups with a 360° weighted straw for easy sipping. Made from BPA-free, heat-resistant food-grade PP, it supports smooth bottle-to-cup transition and fits bottles from 2oz to 11oz. Dishwasher safe and designed for busy parents, this 2-pack kit combines safety, convenience, and innovation to keep your baby hydrated anytime, anywhere.


























| ASIN | B0BHVRVS7V |
| Batteries required | No |
| Best Sellers Rank | #6,950 in Baby ( See Top 100 in Baby ) #167 in Baby Bottles #185 in Toddler Cups |
| Bottle nipple type | Orthodontic |
| Bottle type | Standard Bottle |
| Care instructions | Dishwasher Safe |
| Customer Reviews | 4.4 4.4 out of 5 stars (607) |
| Dishwasher safe | Yes |
| Item Weight | 3.88 ounces |
| Item model number | ROPOSY-79 |
| Material Type | Plastic |
| Material free | BPA Free, Bisphenol A Free, Phthalate Free, Lead Free |
| Number Of Items | 2 |
| Package Dimensions | 4.72 x 4.53 x 2.91 inches |
| Target gender | Unisex |
I**Z
Works great
These are great! My child absolutely loves them. Great for 8 oz bottles, my son did not like the handles but holds his bottle fine without them so it works however they do have a slight leak in the top when warming up but was minimal so I didn’t mind
A**D
Great for transitioning to sippy
Would give 4.5 stars if a could due to product inconsistency. I ordered this item twice. The first set I got look like the item pictured, the second looks slightly different (the straw part is longer). That being said, the items function the exact same. My 9 month old took to these immediately. Have not had any issues with leaking. Cleaning is pretty easy so long as you separate the nipple and straw. Plus each set comes with cleaning brushes so no need buy them separately. Overall happy with this product.
Y**S
Perfect
This is my third review ever and I’ve been on Amazon for as long as I can remember. Get these converter kits. My son has had issues with latching since day one, so we couldn’t use the Avent bottles. He’s gonna be a year already and we’ve been doing sippy cups for almost two months. All the cups are different; all the levels of force needed to sip are different. These are perfect. Not too easy that they spill or he chokes, and not so hard that he can’t get anything out. Now I can finally use these bottles!
Y**N
Works good for baby’s
Fits perfect on the 4oz and 8oz avent glass bottles. Easy to clean, doesn’t leak out! My baby throws the bottle tips it upside down and it doesn’t leak. Works good for our 8 month old
J**S
Great for breast fed baby!!
Perfect for my breast fed baby who didn’t understand the concept of tilting the bottle up for milk!! The straw moves to the liquid so she can drink it in at and direction. Doesn’t leak either!!
R**R
Love it!
Absolutely love these! Fit perfectly on the glass bottles making it easy for the transition into a sippy cup! No leakage, easy to hold, & definitely worth the buy. Super nice not needing to buy extra cups/bottles! My little one had no problem using it for the first time either.
A**R
Minimal to no leakage
Easy to use. Minimal to no leakage when installed correctly. Recommend washing immediately after use.
C**K
Great Idea but Thin Material Toddler Bit a hole Through Straw Nipple
I wanted to love this product because it converted our glass Avent milk bottles to a stray cup however less than 3months of use, and we found a hole in the straw nipple. It’s supposed to be food grade silicone and safe but toddlers teethe and I’m concerned that more can chew off the plastic and swallow. I wish we could get a replacement perhaps of thicker grade silicone. The straw is also very tiny and a bit difficult to wash and put on but it does work and the weighted piece is very smart. Overall the concept is great but the quality of material leaves much more desired. I had high hopes but given we are down a straw nipple and they don’t sell the nipples separately makes me worry about the safety of the items.
A**R
Love them, started to slowly introduce it to my 6 month old and he took to them fast, they fit perfectly into the plastic ring that the Philips advent nipples do, comes with a thin straw clear which I really appreciate. Straw weight works well.
M**R
Compré este kit de conversión para biberones Philips Avent Natural y ha sido una excelente compra. Es perfecto para la transición del biberón al vaso con popote, ya que facilita que el bebé aprenda a beber de forma independiente. La boquilla es suave, no lastima las encías y las asas ayudan mucho al agarre, lo que le da mayor control al bebé. El popote con peso funciona muy bien porque permite beber desde cualquier ángulo sin tener que inclinar el biberón, evitando derrames y frustración. Me gustó que el paquete incluya 4 piezas, ideal para tener repuestos o usar varios biberones al mismo tiempo. El material se siente resistente y seguro, y además incluye cepillos para limpiar el popote fácilmente, algo muy importante para la higiene. En general, es un producto práctico, funcional y compatible, ideal si ya usas biberones Philips Avent. Muy recomendable para bebés que están dejando el biberón tradicional.
T**Y
Really wanted this to work, but it was disappointing. The teat is much thicker and wider than the original Avent nipple, more similar to Nuk. The handles didn’t fit or work properly, the bottles leaked consistently as you couldn’t screw it all the way on. I tried using it multiple times in case it was user error, but the issues continued. The straw was difficult to clean thoroughly, especially when used with milk. Overall, this wasn’t a good transition option for us. I’d recommend skipping this and going with a different straw sippy designed specifically for transitioning instead.
D**S
Fits avent perfectly exactly what I wanted
J**N
The nipple works great. But the handle does not fit no matter how much i push it.
Trustpilot
3 weeks ago
2 months ago