---
product_id: 521435646
title: "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+."
brand: "chubbiee"
price: "₨11909"
currency: LKR
in_stock: true
reviews_count: 8
category: "Chubbiee"
url: https://www.desertcart.lk/products/521435646-sippy-cup-conversion-kits-for-avent-natural-baby-bottles-2
store_origin: LK
region: Sri Lanka
---

# 100% leak-proof cross-cut valve 360° weighted straw for all-angle drinking BPA-free & dishwasher safe silicone 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+.

**Brand:** chubbiee
**Price:** ₨11909
**Availability:** ✅ In Stock

## Summary

> 🥤 Upgrade your baby’s sip game—spill-free, fuss-free, parent-approved!

## Quick Answers

- **What is this?** 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+. by chubbiee
- **How much does it cost?** ₨11909 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/521435646-sippy-cup-conversion-kits-for-avent-natural-baby-bottles-2)

## Best For

- chubbiee enthusiasts

## Why This Product

- Trusted chubbiee brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Hygienic Travel Ready:** Includes independent travel cases to keep spouts and straws pristine on the go.
- • **Leak-Proof Cross-Cut Valve:** Ultra-soft silicone spout adapts to your baby’s bite for spill-free, safe feeding.
- • **360° Weighted Straw System:** Gravity ball straw ensures smooth sipping from any angle—even while reclining.
- • **Seamless Avent Compatibility:** Custom-engineered to fit all Philips Avent Natural bottles perfectly—no leaks, no fuss.
- • **Ergonomic Handles for Tiny Hands:** Lightweight, contoured handles promote confident self-feeding and wrist comfort.

## Overview

The CHUBBIEE Sippy Cup Conversion Kits transform Philips Avent Natural baby bottles into spill-proof, easy-to-use sippy cups with 360° weighted straws, leak-proof silicone spouts, and ergonomic handles. Designed for babies 6 months+, these BPA-free, dishwasher-safe kits come with hygienic travel cases and cleaning brushes, making independent feeding effortless and hygienic for busy parents.

## Description

desertcart.com : CHUBBIEE 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+. : Baby

Review: Great product - 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!
Review: Great next step - These fit perfectly on our advent bottles. It is a good first step for trying to move our baby from a bottle.

## Features

- Exclusive Fit for Avent Natural: Custom-engineered to seamlessly fit all sizes of Philips Avent Natural bottles. To ensure a perfect seal, please note it does not fit Anti-Colic or other bottle brands. (Bottles not included)
- 360 Weighted Straw System: The gravity ball straw attaches seamlessly directly to the silicone spout. This integrated system moves with the liquid, allowing your baby to drink smoothly from any angle-even while reclining-without ingesting air.
- Leak-Proof Cross-Cut Valve: The ultra-soft silicone spout features a precision cross-cut opening that adapts to your baby's bite. It provides a customized variable flow to prevent choking and immediately creates a 100% spill-proof seal the moment sucking stops.
- Hygienic Travel Cases Included: Designed for busy parents on the go. Each set comes with its own independent storage case, ensuring your baby's spout and straw remain completely clean, hygienic, and ready to use in your diaper bag.
- Effortless Cleaning & 2-Pack Value: Includes 2 complete accessory sets and 2 specialized straw cleaning brushes. Crafted from 100% BPA-free food-grade silicone, every part is completely top-rack dishwasher and sterilizer safe.
- Ergonomic Handles for Independent Feeding: Ultra-lightweight and contoured handles designed to help tiny hands master independent feeding without wrist fatigue, promoting self-feeding skills and confidence.
- Complete Conversion Kit Components: Each pack includes soft silicone spouts with cross-cut valves, weighted gravity straws, ergonomic handles, independent travel cases, and straw cleaning brushes for a comprehensive feeding solution.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BN17R92C |
| Age Range Description | Baby |
| Best Sellers Rank | #23,400 in Baby ( See Top 100 in Baby ) #500 in Toddler Cups |
| Bottle Nipple Type | Vented |
| Bottle Type | Philips Avent Natural Baby Bottle |
| Brand | CHUBBIEE |
| Capacity | 8 ounces |
| Color | Wihte |
| Customer Reviews | 4.4 out of 5 stars 265 Reviews |
| Item Weight | 2.4 ounces |
| Liquid Flow Speed | Variable Flow |
| Manufacturer | CHUBBIEE |
| Material Type Free | BPA Free, Lead Free, Phthalates Free |
| Number of Items | 2 |
| Unit Count | 2 Count |

## Product Details

- **Bottle Nipple Type:** Vented
- **Brand:** CHUBBIEE
- **Color:** Wihte
- **Item Weight:** 2.4 ounces
- **Material Type Free:** BPA Free, Lead Free, Phthalates Free

## Images

![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+. - Image 1](https://m.media-amazon.com/images/I/712s3OHvqpL.jpg)

## Questions & Answers

**Q: Will this kit fit the Philips Avent Anti-colic or Classic bottles?**
A: No, it does NOT. This conversion kit is exclusively designed for Philips Avent Natural bottles (the ones with the wide neck and curvy shape). It is compatible with both Plastic and Glass Natural bottles (4oz, 9oz, and 11oz).

**Q: Can my baby drink from the bottle while lying down or reclining?**
A: Yes, but lying completely flat is not recommended. The weighted straw works at any angle, including reclining. However, to prevent choking and ear infections, pediatricians advise keeping your baby’s head slightly elevated while drinking.

**Q: Does the nipple leak if the cup is turned upside down or shaken?**
A: It is spill-proof. Our silicone spout nipple is designed with a variable flow valve that only releases liquid when your baby sucks on it. If held upside down or dropped, it won't create a mess. Please make sure all parts are assembled tightly.

**Q: How do I clean the straw? Is it hard to get the milk residue out?**
A: Cleaning is very easy. We recommend disassembling the parts and using the brush to clean inside the straw with cleaning brush after every use. All parts (nipples, straws, handles) are also top-rack dishwasher safe and sterilizer safe.

**Q: I have the Avent Glass Natural bottles. Are the handles and screw rings heavy enough to hold the glass bottle securely?**
A: Yes! These handles are sturdy and ergonomically designed to fit Philips Avent Natural Glass Bottles perfectly. They provide a non-slip grip that makes it much easier for your little one to hold the heavier glass bottles independently.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by A***L on May 21, 2026*

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!

### ⭐⭐⭐⭐⭐ Great next step
*by L***E on December 3, 2025*

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

### ⭐⭐⭐⭐ Good
*by H***H on February 16, 2025*

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

## Frequently Bought Together

- Sippy Cup Conversion Kit for Philips Avent Natural Baby Bottle, Transition Kit with Silicone Sippy Spout Nipple, Weighted Straw, Bottle Handle, Cleaning Brush, Spill-Proof, BPA-Free, Pack of 2
- Philips Avent Natural Response Nipples, Extra Fast Flow (Flow 5), 4-Pack, SCY965/04
- Philips Avent Natural Baby Bottles with Natural Response Nipples (Medium Flow, Flow 3), 9oz, 4-Pack, SCY903/04

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-08-28*