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🍼 Sip smarter, grow bolder — 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° gravity ball straw, enabling babies to drink comfortably in any position. Made from BPA-free, heat-resistant food-grade PP, this 2-pack kit fits bottles from 2oz to 11oz, is dishwasher safe, and designed for durability and easy cleaning, supporting smooth bottle-to-cup transitions.



























| ASIN | B0BHVRVS7V |
| Age Range Description | Baby |
| Best Sellers Rank | #8,156 in Baby ( See Top 100 in Baby ) #194 in Baby Bottles #213 in Toddler Cups |
| Bottle Nipple Type | Orthodontic |
| Bottle Type | Standard Bottle |
| Brand | ROPOSY |
| Capacity | 11 ounces |
| Color | Straw Cup Conversion Kit |
| Customer Reviews | 4.5 out of 5 stars 674 Reviews |
| Dish Washer Safe | Yes |
| Is the item microwaveable? | Yes |
| Item Weight | 110 Grams |
| Liquid Flow Speed | Adjustable flow speed |
| Manufacturer | Hefei Xinteng Hardware & Plastic Co., Ltd. |
| Material Type Free | BPA Free, Bisphenol A Free, Phthalate Free, Lead Free |
| Number of Items | 2 |
| Unit Count | 2.0 Count |
L**�
Great for beginners!
No leakage, fits perfectly with the Phillips Avent bottle. Easy transition from bottle to sippy cup.
K**Y
Perfect fit
Perfect converter for the Phillips avent bottles! Easy to clean and easy to set up. Have only had one spill so far where nipple came out of ring, otherwise pretty durable when dropped/thrown.
L**A
Awesome product
I love this it’s SUPER easy to assemble, easy to clean. I’m not yet sure of how durable the nipple is since I just started using it today but my 6 (7 tomorrow 😊)month old has two bottom teeth and has yet to bite a hole into it. It does seem durable and sturdy though. It doesn’t leak which is awesome since he just leaves his bottles thrown all over the bed 😂 I highly recommend the price is awesome. Everything about this little kit is great. And it’s easy to use for him. He is able to lay on his back, on his tummy, on his sides, sit up and still be able to drink his milk.
M**.
love them
very well made and work great with phillip avent bottles. hoping my son taking a liking to them.
T**R
Great for transitioning to straw
These were great for repurposing my bottles without having to buy new straw cups. Great for transitioning little one to a straw.
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
J**.
Exact fit!
Fits perfect in my Philips Avent bottles. Easy to clean and does not leak. The ball at the end makes it easier for my baby to get access to every last drop. Comes with the handles but my baby prefers to hold her own bottles.
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!
A**R
Worth the purchase
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
Kit de Conversión con Popote para Biberón Philips Avent Natural
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.
E**A
Quality
Good quality. Fits Avent bottle
M**S
Me llegó incompleto
Buen producto. Pero estoy un poco molesta porque me llegó incompleto. Solo venía lo de dos boquillas y la descripción dice que son 4. Aparte, al principio de usarla todo bien, pero después empezó a regar. No entiendo que pasó
T**Y
Not a Good Transition Option
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.
Trustpilot
3 days ago
2 weeks ago