Maymom Baby Bottle Thread Changer & Converter for Spectra S1/S2 – Compatible with Medela, Ameda, Lifefactory, and Narrow-Neck Dr. Brown Bottles

Overview

The Maymom Baby Bottle Thread Changer is a thoughtfully designed, second-generation adapter that expands your pumping setup. Its compact form stays out of the way of the duckbill valve while providing a reliable, smooth screw-on experience to both wide-mouth flanges and standard bottles. This is a practical accessory built to adapt your bottle ecosystem without introducing clunky complexity into your routine.

What it does: This converter enables Avent and Spectra S1/S2 flange systems to be used with widely available standard bottles from Medela, Ameda, Lifefactory, and narrow-neck Dr. Brown bottles. It’s a simple way to diversify bottle choices while continuing to pump with familiar flanges. Important note: it will not fit wide-mouth Dr. Brown bottles.

Why it matters

In today’s pumping routine, flexibility matters. The Maymom adapter helps you balance reliability with choice—letting you select a bottle brand that fits your needs, lifestyle, and travel plans. You’ll find it especially helpful when you’re mixing quick feeds, keeping spare bottles on hand, or coordinating pumping with family members who prefer different bottle brands.

Compatibility highlights

• 2nd generation bottle size changer; designed to avoid interfering with the duckbill, and easier screw on to both widemouth flanges and standard-sized bottles.
• Allows Avent and Spectra S1 and S2 flanges to use standard bottles like Medela, Ameda, Lifefactory, and Dr. Brown narrow-neck bottles (note: not compatible with wide-mouth Dr. Brown bottles).
• We recommend using a bottle stand to reduce tipping and stabilize the setup during feeding sessions.
• BPA-free, dishwasher safe; FDA compliant for food contact. Each batch is safety-tested, with test reports available online on Maymom’s website.
• Backed by Maymom’s USA-based customer service for guidance and support.

Care, safety, and real-world use

Designed for busy households, the changer combines sturdy construction with smooth threading for a secure fit. When used with standard bottles, you can streamline your kit and reduce clutter—especially useful for caregivers who juggle multiple bottle brands. Regular cleaning in a dishwasher-safe cycle keeps surfaces hygienic, while the available safety reports provide transparency about testing and materials.

Think of this as a flexible tool in your pumping arsenal—helping you adapt to changing needs, travel scenarios, or supply availability. It’s not a guarantee of outcomes, but a practical option that broadens your bottle-compatibility footprint while staying aligned with safety and quality expectations.