--- product_id: 421651783 title: "Breast Pump Sizing Insert - 17mm - Flange Inserts, Improves Fit and Comfort for Breast Pumping Moms, Fits in 24mm Willow Breast Pump Flange - 2ct" brand: "willow" price: "138 zł" currency: PLN in_stock: true reviews_count: 5 category: "Willow" url: https://www.desertcart.pl/products/421651783-breast-pump-sizing-insert-17mm-flange-inserts-improves-fit-comfort store_origin: PL region: Poland --- # 17mm precision fit BPA-free silicone comfort Reusable & dishwasher safe Breast Pump Sizing Insert - 17mm - Flange Inserts, Improves Fit and Comfort for Breast Pumping Moms, Fits in 24mm Willow Breast Pump Flange - 2ct **Brand:** willow **Price:** 138 zł **Availability:** ✅ In Stock ## Summary > ✨ Pump in Style & Comfort — Because You Deserve the Best! 👩‍🍼 ## Quick Answers - **What is this?** Breast Pump Sizing Insert - 17mm - Flange Inserts, Improves Fit and Comfort for Breast Pumping Moms, Fits in 24mm Willow Breast Pump Flange - 2ct by willow - **How much does it cost?** 138 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/421651783-breast-pump-sizing-insert-17mm-flange-inserts-improves-fit-comfort) ## Best For - willow enthusiasts ## Why This Product - Trusted willow brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Join the Movement:** Trusted by 300,000+ moms who’ve upgraded to Willow’s hands-free, app-connected pumping experience. - • **Hygiene & Durability:** Dishwasher safe and reusable, designed to last with recommended replacement every 3 months. - • **Safe & Skin-Friendly:** Made from flexible, BPA-free silicone that’s gentle on skin and easy to clean. - • **Seamless Compatibility:** Fits perfectly into 24mm Willow breast pump flanges and containers for hassle-free use. - • **Perfect Fit, Maximum Comfort:** 17mm flange insert designed for moms needing smaller sizes, ensuring optimal suction and comfort. ## Overview The Willow Breast Pump Sizing Insert in 17mm is a BPA-free, flexible silicone flange insert designed to improve fit and comfort for moms with smaller nipple sizes. Compatible with 24mm Willow flanges, it enhances suction and pumping efficiency while being dishwasher safe and reusable. Recommended for replacement every 3 months, it’s part of a trusted system used by over 300,000 moms seeking a hands-free, wearable pumping solution. ## Description Designed with moms in mind, Willow Breast Pump Flange Inserts help optimize comfort and output for moms who need a wearable breast pump flange smaller than 21mm. Made from BPA-free, dishwasher-safe silicone, each flange insert is easy to assemble, clean and remove. Clear color delivers easy nipple visibility for a secure, snug fit. Available in 13mm, 15mm, 17mm, 19mm and 21mm, our flange inserts are compatible with 24mm Willow flanges and containers. We recommend replacing breast pump inserts every 3 months for optimal breast pumping performance. Normal wear and tear can impact suction and output. You deserve a pump you love. Powerful, comfortable, fully in bra and app-connected, our wearable pumps for breastfeeding are simply built different. So cut the cords, ditch the dupes and join the 300,000 moms who have brought Willow into their lives. Find your perfect Willow breast pump today and unlock the convenience of hands-free pumping. Review: Getting the correct flange insert is absolutely necessary when pumping. I got the Willow Go which comes with a standard 24mm flange. I use a 17mm so I could have bought a random one off desertcart but I wanted to make sure it was compatible with my pump so I just brought this brand. I do like the scalloped edges, it’s cute and adds a lil extra razzle dazzle to it. It fits perfectly in my pump. I did give 4 stars because of the price. $20 for these seems pricey and I’m sure I could have gotten other ones cheaper. Review: Comfortable and helps my flanges maintain suction!! Highly recommend ## Features - Reusable Breast Pump Flange Inserts: Designed to help optimize comfort and output for moms who measure smaller than 21mm, Willow Breast Pump Sizing Inserts in 17mm offers the pumping convenience you deserve - Comfortable, Silicone Design: Flexible, BPA free silicone provides a snug, secure fit; Dishwasher safe, flange inserts for Willow Breast Pump are easy to clean; Clear color provides easy visibility - Compatible with Any Breast Pump: Pair with 24mm breast pump flanges and reusable containers; Keep a spare set on hand to minimize washing between hands free pumping sessions - Find Your Perfect Fit: Breast pump inserts are available in 5 sizes: 13mm, 15mm, 17mm, 19mm and 21mm; Reference Willow's size chart to determine your size for an optimal pumping experience - Trusted and True: We recommend replacing breast pump flange inserts every 3 months for optimal performance; Join the 300,000 moms who have brought Willow into their homes and lives ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09B7VMH7S | | ASIN | B09B7VMH7S | | Additional Features | Portable, Wearable | | Brand Name | Willow | | Color | Clear | | Customer Reviews | 4.7 4.7 out of 5 stars (502) | | Customer reviews | 4.7 4.7 out of 5 stars (502) | | Included Components | Flange | | Is the item dishwasher safe? | No | | Item Weight | 0.04 Pounds | | Item model number | SZ1763 | | Manufacturer | Willow | | Manufacturer | Willow | | Manufacturer Part Number | SZ1763 | | Material Type | Silicone | | Material Type Free | Lead Free | | Model Name | Willow Inserts | | Model Number | SZ1763 | | Number of Items | 1 | | Operation Mode | Manual | | Power Source | Battery Powered | | Product Dimensions | 12.7 x 3.81 x 14.48 cm; 18.14 g | | Size | 17MM | | UPC | 858298006606 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Willow - **Material:** Silicone - **Operation mode:** Manual - **Power source:** Battery Powered - **Special features:** Portable, Wearable ## Images ![Breast Pump Sizing Insert - 17mm - Flange Inserts, Improves Fit and Comfort for Breast Pumping Moms, Fits in 24mm Willow Breast Pump Flange - 2ct - Image 1](https://m.media-amazon.com/images/I/31LUxe1lEfL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ Review *by A***R on 27 July 2025* Getting the correct flange insert is absolutely necessary when pumping. I got the Willow Go which comes with a standard 24mm flange. I use a 17mm so I could have bought a random one off Amazon but I wanted to make sure it was compatible with my pump so I just brought this brand. I do like the scalloped edges, it’s cute and adds a lil extra razzle dazzle to it. It fits perfectly in my pump. I did give 4 stars because of the price. $20 for these seems pricey and I’m sure I could have gotten other ones cheaper. ### ⭐⭐⭐⭐⭐ Review *by M***A on 4 December 2025* Comfortable and helps my flanges maintain suction!! Highly recommend ### ⭐⭐⭐⭐⭐ Review *by M***A on 17 June 2023* LOVE this pump. I used a Spectra during my maternity leave and thought I had a nursing/pumping schedule down pat. Then I went back to work full time and said schedule became worthless in a heartbeat. I work in healthcare and despite having a private office AND an extremely breast-friendly environment I just could not get my act together. Baby woke at a different time every day, some days I didn’t have time to pump before work, and I’d arrive to my first patients with two full boobs and nothing I could do about it for four+ hours. My supply dropped from plentiful to barely there to insufficient in the space of two weeks. Willow Go saved me. Day one I didn’t have time to pump before work and — BOOM popped these ladies in and saw my first three patients while pumping. Snuck away for five minutes to empty the milk into a bottle and rapidly disassemble everything (I keep the dirty parts in the fridge until lunchtime, when I wash them), then got right back to work. I could have cried, I was so happy. I can now pump 2-3 times during normal business hours and it’s been a game changer. Cleaning the parts is a pain in the ass but I can do that over lunch. I use my Spectra at home since it’s easier to clean. But I’ve come to prefer the Willow Go between the two. I’d heard from other users that the wearables don’t empty you like a Spectra or Medela but that thankfully has not been the case for me. I actually just use stimulation mode for the entire 25 minutes and that seems to work best for me for some weird reason. Anyhow my supply has now rebounded and mommy’s stress level is soooooooo much better. Yes you look like Dolly Parton wearing them and yes your boobs click and vibrate while they’re on BUT it’s so worth it. Five stars. ## Frequently Bought Together - Willow Breast Pump Sizing Insert, 17mm, 2 Ct, Flange Inserts for Breast Pump, Improves Fit and Comfort for Breast Pumping Moms, Fits in 24mm Willow Breast Pump Flange - Willow Go Breast Pump Diaphragm Set, 2 Ct, Pump Diaphragms for Spare Use or Replacement, Pair with Willow Go Wearable Breast Pump for Hands Free Pumping, BPA Free and Dishwasher Safe - Willow Go Breast Pump Duckbill Valve Set, 2 Ct, Pump Valves for Spare Use or Replacement, Pair with Willow Go Wearable Breast Pump for Hands Free Pumping, BPA Free and Dishwasher Safe --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/421651783-breast-pump-sizing-insert-17mm-flange-inserts-improves-fit-comfort](https://www.desertcart.pl/products/421651783-breast-pump-sizing-insert-17mm-flange-inserts-improves-fit-comfort) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-23*