{"product_id":"durceler-21mm-silicone-flange-inserts-24-25mm-shields-to-21mm-fit-2pc","title":"Durceler 21mm Silicone Flange Inserts – 24\/25mm Shields to 21mm Fit (2pc)","description":"\u003cdiv\u003e\n  \u003ch2\u003eDurceler 21mm Silicone Flange Inserts — tailored fit for 24mm\/25mm shields\u003c\/h2\u003e\n  \u003cp\u003eDurceler offers a practical silicone solution that adapts large shields to a 21mm inner tunnel. By sliding these 21mm inserts into compatible shield cups (including Medela, Spectra, Elvie, Freemie, and various 24–25mm models), you can create a more comfortable, individualized pumping experience.\u003c\/p\u003e\n  \u003cp\u003eThe 2-piece pack prioritizes value and readiness—keep a spare on hand for quick swaps or travel, so you can maintain your preferred pumping setup without changing shields.\u003c\/p\u003e\n  \u003ch3\u003eWhy the fit matters\u003c\/h3\u003e\n  \u003cp\u003eWhen shield outer diameters exceed the nipple size, a properly sized tunnel can reduce rubbing and pressure points. The Durceler inserts are designed for users with nipple diameters that may be smaller than the shield opening, helping you maintain a secure seal and steady flow across sessions.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eBroad compatibility: Works with a wide range of brands and models, including Medela, Spectra, Elvie, and Freemie shields.\u003c\/li\u003e\n    \u003cli\u003eMaterial you can trust: BPA-free silicone that stays durable and clear through repeated use.\u003c\/li\u003e\n    \u003cli\u003eHandsfree bra integration: Keeps your existing handsfree bra setups functional, with the insert inside the shield.\u003c\/li\u003e\n    \u003cli\u003eEasy to fit: A gentle squeeze during insertion helps the insert seat correctly for a snug, consistent tunnel.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch3\u003eHow to measure and set up\u003c\/h3\u003e\n  \u003cp\u003eBefore pumping, confirm the base circumference of your nipple area sits around 50.24–56.52 mm. After a pumping session, you may find nipple diameters in the 18–20 mm range. If your shield is 24–25 mm, the 21mm insert can help tailor the tunnel to your anatomy.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eMeasure and compare: Use a ruler or tape to estimate circumference and diameter to guide fit.\u003c\/li\u003e\n    \u003cli\u003eInsertion tips: Lightly squeeze the shield as you seat the insert to achieve the best seal and alignment.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eIdeal for busy mornings, travel, or daycare pumping, the insert reduces fuss by letting you keep your large shield while dialing in a comfortable tunnel. The result is a calmer pumping feel, less irritation, and a cleaner seal that helps prevent leaks during motion or while reclined.\u003c\/p\u003e\n  \u003cp\u003eWhether you’re optimizing from a primary shield choice or adapting a handsfree setup, this insert offers an adjustable, non-permanent option to explore fit variations. While results will vary, many users report a more comfortable sensation and a steadier pumping rhythm when the tunnel aligns well with their nipple size and shield.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What brands and shield sizes does the Durceler 21mm insert fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It reduces 24–25mm shields to 21mm and works with Medela, Spectra, Elvie, Freemie, and several others; check nipple measurements before pumping.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How can I ensure a comfortable, leak-free fit when using the insert?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Gently squeeze the shield as you seat the insert to align the tunnel, ensuring a snug seal and stable positioning during pumping.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Durceler","offers":[{"title":"Default Title","offer_id":47380528398548,"sku":"B09MCT1KF5","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/6955\/8484\/files\/durceler-21mm-silicone-flange-insert-closeup.jpg?v=1766263804","url":"https:\/\/www.mythriftymom.ca\/products\/durceler-21mm-silicone-flange-inserts-24-25mm-shields-to-21mm-fit-2pc","provider":"MyThriftyMom | Trusted Baby \u0026 Maternity Essentials for Canadian Families","version":"1.0","type":"link"}