compatible with pump in style advanced?

Yes, I'm using them with my pump in style advanced pump, actually, as I type this  Haha

Do the yellow Medela brand valves and Medela white membranes also fit this product?

So far all of my Medela products have been fitting perfectly with these. Valves and membranes included!

Does it state anywhere on the breastshield that the size is 25mm? I use different sizes for each breast so I need to know which is which

Yes it does! I use multiple sizes so I depend on that as well :)

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21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom

Product ID: 1614510

Details

Brand
Maymom
Color
Clear
Included Components
Breast Flange
Material
Plastic
Number of Items
1

📏21 mm precision fit

⚙️One-piece seamless design

🛡️BPA & DEHP-free safe materials

€ 31.45

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

✨ Pump Smarter, Not Harder — Comfort Meets Efficiency! 🍼

BOOST YOUR MILK SUPPLY - Optimized fit reduces duct blockage, increasing milk output by up to 1 oz per session.
FDA REGISTERED TESTED - US FDA registered medical device with compliance to US and EU safety standards for peace of mind.
UNIVERSAL COMPATIBILITY - Works flawlessly with all Medela pumps except select models, ensuring versatile use.
SEAMLESS ONE PIECE DESIGN - Integrated flange and connector for easier cleaning and hassle-free assembly.
PERFECT FIT MAXIMUM COMFORT - 21 mm size tailored for nipple diameters 19-20 mm post-pumping to eliminate pain and bruising.

The Maymom 21 mm One-Piece Breastshield is a precision-engineered replacement for Medela PersonalFit 21 mm shields, crafted from BPA-free materials and FDA-registered for safety. Designed to fit nipple diameters of 19-20 mm after pumping, its seamless one-piece design enhances comfort, reduces pain, and boosts milk supply. Compatible with most Medela pumps, this accessory transforms your pumping experience with superior fit and hygiene.

Specifications

ASIN	B00FK599DE
ASIN	B00FK599DE
Best Sellers Rank	#14,365 in Baby ( See Top 100 in Baby ) #771 in Breastfeeding Supplies
Brand Name	Maymom
Color	Non-detachable Clear
Customer Reviews	4.4 4.4 out of 5 stars (6,769)
Date First Available	April 22, 2013
Included Components	Breast Flange
Item Weight	1.28 ounces
Item model number	M001-2LF2V4M
Manufacturer	Maymom
Manufacturer	Maymom
Manufacturer Part Number	M012-sFV2Mx2
Manufacturer recommended age	0 - 3 years
Material Type	Plastic, Silicone
Model Number	M001-2LF2V4M
Number of Items	1
Product Dimensions	4.33 x 3.54 x 4.33 inches; 1.28 ounces
Product Style	21 mm
Size	21 mm
UPC	885155834591 738435627553
Unit Count	1 Count

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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€ 31.45

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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