• Compatibility: The Flange Inserts 13mm are breast pump accessories that can be used with most 24mm Shields/Flanges.Compatible with any S9 Pro/S12 Pro/S9/S12 wearable breast pump. (For example, compatible with Momcozy S12 Pro/S9 Pro/S12/S9 Hands-Free breast pump). Use with 24mm breast Shields for TSRETE/Medela/Spectra/Elvie/Willow/Bellaaby/Motif Luna/Ameda MYA/Ainsir/Phanpy/Lulia/NaNaLazy/Luxlady/kidzio/eulumap/Teexin/Fisroa/KISSBOBO/Goldeep/BIOBOO/Mumeasy/Nanawawa/TOVVILD/CPPSLEE and others.
• Usage: Our 20-pack flange inserts sets contain two of each size (5 sizes in total), which can be used to find the correct size for your nipples. At least two flange inserts can be used simultaneously for work.
• Save: These replacement pump parts will save you the hassle of testing nipple size and selection. Many moms have nipples of varying sizes that can also change in size at different times. If your nipple size is less than 24mm, we have a suitable set for you.
• Safety: Made of transparent silicone material,our product is BPA-free,you can use it with confidence.
• Attention: These breast pump accessories are only suitable for 24mm Shields/Flanges and cannot be used with other sizes of Shields/Flanges. Using coconut oil or nipple butter can reduce friction and make them easier to use.

Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, and APO addresses is not available for this item

Warranty: 90 Day Woot Limited Warranty