Updated for 2026 — This article has been reviewed and updated with the latest recommendations.
31 Best Medela Breast Pump Parts in 2026
If you are using a Medela breast pump, keeping a supply of replacement parts on hand saves you from emergency store runs when something wears out or goes missing. Valves lose suction, membranes tear, tubing cracks, and connectors get left at work. Having backups means your pumping schedule never gets disrupted.
Here are the 31 best Medela breast pump parts and accessories to keep in your rotation in 2026.
Breast Shields and Flanges
1.
Medela PersonalFit Flex Breast Shields - Best Overall Shields
The Flex shields have a soft, flexible rim that adapts to your breast shape for better comfort and more efficient milk removal. Available in 21mm, 24mm, and 27mm sizes. Getting the right size makes a noticeable difference in output and comfort. Pack of 2 for around $15.
2.
Medela Standard Breast Shields 24mm - Standard Size
The 24mm shield is the most common size and comes included with most Medela pumps. Keep a spare set so you always have a clean pair ready. Pack of 2 for around $10.
3. Medela Standard Breast Shields 27mm - Large Size
For larger nipple diameters, the 27mm shields prevent compression and discomfort during pumping.
Pack of 2 for around $10.
4. Medela Standard Breast Shields 21mm - Small Size
Many women actually need a smaller shield than the standard 24mm that comes with the pump. Using too large a shield reduces suction efficiency. Pack of 2 for around $10.
Valves and Membranes
5. Medela Valve and Membrane Set - Most Essential Replacement
These are the parts that wear out fastest. The yellow valve and white membrane work together to create suction. When your pump feels weaker, replacing these usually fixes it immediately. Replace every 2 to 4 weeks with heavy use. Pack of 2 sets for around $8.
6.
Medela Extra Valve and Membrane Bulk Pack - Best Value
If you pump multiple times daily, buying in bulk saves money. Pack of 4 sets for around $14.
7. Maymom Valve and Membrane for Medela - Best Third-Party
Maymom makes compatible replacement parts at lower prices.
The quality is comparable to OEM parts for most users. Pack of 8 for around $9.
Tubing
8. Medela Pump In Style Tubing - For Pump In Style Models
Replacement tubing for the Pump In Style. Check your specific model since older and newer versions use different connectors.
Around $10 per set.
9. Medela Freestyle Flex Tubing - For Freestyle Flex
Specific to the Freestyle Flex portable pump. The connectors are different from the Pump In Style. Around $12 per set.
10.
Maymom Replacement Tubing for Medela - Budget Tubing
Compatible with multiple Medela models at a lower price point. Pack of 2 sets for around $8.
Connectors
11. Medela PersonalFit Connector - Standard Connector
Connects the breast shield to the bottle. Replace if cracked or if milk is leaking at the junction. Around $8 each.
12.
Medela Freestyle Flex Connector - Freestyle Specific
The Freestyle uses its own connector design. Keep a spare since losing one means you can only pump on one side. Around $10.
Bottles and Storage
13. Medela 5 oz Breast Milk Bottles - Standard Collection Bottles
The 5 oz bottles thread directly onto Medela shields.
Having extras means you can pump and store without stopping to transfer milk. Pack of 6 for around $15.
14. Medela 8 oz Breast Milk Bottles - Large Collection Bottles
For higher-output pumping sessions, 8 oz bottles prevent mid-session overflow.
Pack of 2 for around $10.
15. Medela Breast Milk Storage Bags - For Freezer Storage
Pre-sterilized bags with a double zipper seal and self-standing base. Write the date on the label area. Pack of 100 for around $16.
16.
Medela Bottle Stand - Prevents Spills
A simple plastic stand that keeps bottles upright during and after pumping. Prevents the heartbreak of spilled breast milk. Around $7.
Bottle Accessories
17. Medela Bottle Lids - Seal Bottles for Storage
Solid lids that seal on the standard Medela bottles for fridge or transport. Pack of 6 for around $6.
18.
Medela Disc Lids - Travel Lids
Flat disc lids for compact storage and transport. They seal tighter than the tall lids. Pack of 6 for around $6.
19. Medela Calma Nipple - Breastfeeding-Friendly Bottle Nipple
The Calma nipple only releases milk when baby actively sucks, mimicking breastfeeding.
Helps prevent nipple confusion. Around $12.
20. Medela Slow Flow Nipples - Standard Nipple
Standard slow-flow nipples that fit Medela bottles. Good for younger babies. Pack of 3 for around $7.
21.
Medela Medium Flow Nipples - For Older Babies
Faster flow for babies who have outgrown slow flow. Pack of 3 for around $7.
Cleaning and Care
22. Medela Quick Clean Micro-Steam Bags - Fastest Sterilization
Sterilize pump parts in 3 minutes using a microwave.
Each bag is reusable up to 20 times. Pack of 12 bags for around $14.
23. Medela Quick Clean Sanitizing Spray - No-Rinse Cleaning
When you cannot wash with soap and water, this spray sanitizes pump parts in seconds. Essential for pumping at work. Around $8.
24. Medela Quick Clean Wipes - Portable Cleaning
Pre-moistened wipes for cleaning pump parts on the go.
Pack of 90 for around $10.
25. Medela Quick Clean Breast Pump and Accessory Sanitizer - Electric Sterilizer
Plug-in steam sterilizer that sanitizes in 3 minutes. Larger capacity than microwave bags. Around $35.
Comfort and Convenience
26.
Medela Hands-Free Collection Cups - Wearable Pumping
Convert your Pump In Style into a wearable setup. The cups fit inside your bra and connect to your pump via tubing. Around $50 per pair.
27. Medela Easy Expression Bustier - Hands-Free Bra
A zip-front bustier that holds breast shields in place so both hands are free.
Works with any Medela pump. Around $30.
28. Medela Breast Milk Cooler Set - Transport Kit
Insulated cooler bag with an ice pack and four 5 oz bottles. Keeps milk cold for up to 12 hours. Around $20.
29. Medela Tender Care Lanolin - Nipple Cream
Hypoallergenic lanolin that soothes sore nipples from pumping. Safe for baby to ingest, so no need to wipe off before nursing. Around $10 for a 2 oz tube.
30. Medela Pump In Style Battery Pack - Portable Power
AA battery pack that powers the Pump In Style when you cannot reach an outlet. Takes 8 AA batteries. Around $15.
31. Medela Spare Parts Kit - All-in-One Replacement Set
Includes connectors, valves, membranes, and tubing in one package. The smartest purchase for stocking your backup supply. Around $18.
Replacement Schedule
Valves and membranes should be replaced every 2 to 4 weeks if you pump daily. Tubing should be replaced whenever you see moisture inside or if the tubing becomes discolored. Breast shields can last several months but should be replaced if you notice cracks or changes in suction. Inspect all parts weekly and replace anything that shows wear.
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