# PersonalFit Flex shields and connectors by Medela pump Which PersonalFit Flex shields and connectors fit a Medela breast pump, depending on the pump model? The pump model is not stated, so fit depends on which pump you have\. MEDELA PersonalFit™ Connectors: They work with Medela breast pumps except Freestyle, Harmony and Sonata models\. They attach to every PersonalFit breast\-shield size, which is sold separately\. Medela PersonalFit Flex Connectors: The connectors work only with Pump In Style with MaxFlow and Freestyle Flex breast pumps\. They work with PersonalFit, PersonalFit Flex and PersonalFit Plus breast shields, sold separately\. Medela PersonalFit Connectors: For Medela Symphony and Pump in Style Advanced breast pumps\. Not compatible with Pump in Style with MaxFlow, Freestyle, Freestyle Flex, Harmony, Sonata, or Swing\. Also attaches to PersonalFit Flex breast shields\. Medela Personal Fit Flex Breast Shield: The store says these breast shells work with all Medela breast pumps\. The quoted variant is 24 mm\. MEDELA PersonalFit Flex™ Breast Shields: Sizes range from S 21 mm through XXL 36 mm\. Medela Personal Fit Flex Breast Shields: The quoted variant is 27 mm\. ### 1. [MEDELA PersonalFit™ Connectors](/products/ucp/anbbaby-com/4506806779990) (sold by anbbaby\.com) They work with Medela breast pumps except Freestyle, Harmony and Sonata models\. - Pump fit: They work with Medela breast pumps except Freestyle, Harmony and Sonata models\. (listing) - Shield fit: They attach to every PersonalFit breast\-shield size, which is sold separately\. (listing) - Sizes: - ### 2. [Medela PersonalFit Flex Connectors](/products/ucp/anbbaby-com/6558646108246) (sold by anbbaby\.com) The connectors work only with Pump In Style with MaxFlow and Freestyle Flex breast pumps\. - Pump fit: The connectors work only with Pump In Style with MaxFlow and Freestyle Flex breast pumps\. (listing) - Shield fit: They work with PersonalFit, PersonalFit Flex and PersonalFit Plus breast shields, sold separately\. (listing) - Sizes: - ### 3. [Medela PersonalFit Connectors](/products/ucp/anbbaby-com/8777998106910) (sold by anbbaby\.com) Also attaches to PersonalFit Flex breast shields\. - Pump fit: For Medela Symphony and Pump in Style Advanced breast pumps\. (listing) - Shield fit: Also attaches to PersonalFit Flex breast shields\. (listing) - Sizes: - ### 4. [Medela Personal Fit Flex Breast Shield](/products/ucp/anbbaby-com/4007253508182) (sold by anbbaby\.com) The store says these breast shells work with all Medela breast pumps\. - Pump fit: The store says these breast shells work with all Medela breast pumps\. (listing) - Shield fit: - - Sizes: The quoted variant is 24 mm\. (listing) ### 5. [MEDELA PersonalFit Flex™ Breast Shields](/products/ucp/anbbaby-com/4007253540950) (sold by anbbaby\.com) Sizes range from S 21 mm through XXL 36 mm\. - Pump fit: - - Shield fit: - - Sizes: Sizes range from S 21 mm through XXL 36 mm\. (listing) ### 6. [Medela Personal Fit Flex Breast Shields](/products/ucp/anbbaby-com/4007253573718) (sold by anbbaby\.com) The quoted variant is 27 mm\. - Pump fit: - - Shield fit: - - Sizes: The quoted variant is 27 mm\. (listing) ## Also cited in the text - Medela PersonalFit Connectors, Incompatible pumps: Not compatible with Pump in Style with MaxFlow, Freestyle, Freestyle Flex, Harmony, Sonata, or Swing\. (listing) Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\. Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live\. Written 2026-10-10T03:00:08.470Z. This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. RoboTrunk is not the seller and never holds the money. Buying works in one path. RoboTrunk's tools prepare a checkout at that store, then hand back a short-lived link. The person approves the total; once RoboTrunk has checked the store's total against it, the person is given the checkout link to tap in their own browser, or, if the person prefers and gives permission, their agent may open the link and finish there, and payment always happens on the store's own checkout page. RoboTrunk never takes the payment or sees a card. Where the rest of this site is: - /agent/story.md is what RoboTrunk is and how it works, in full. - /agent/tools.json is every tool, its arguments and its answers. - /agent/merchants is every store you can buy from through RoboTrunk. - /products/ucp is every store's indexed products. - /products/search is one search across every store, in plain words. - [What RoboTrunk is](/agent/story.md) - [Every tool, in your browser through WebMCP](/agent) - [The tools and how to call them](/agent/tools.json) - [The stores you can buy from](/agent/merchants) - [Every store's products](/products/ucp) - [Search every store at once](/products/search)