I use the 21mm insert with the 24mm base cup and it is so comfortable and easy to use with my Medela freestyle!

The 21mm inserts were designed to fit into the 28mm flanges with all breast pumps (except Freemie SlimFit), including the Original Elvie pump. Our patented inserts are the best kept secret of super models, Instagrammers, fashionistas, and celebrities on the red carpet. If a particular brand of insert doesn’t come in your size, it’s safe to say right away it won’t be the fit for you. To clean, Gently use the pad of your fingertips to wash the adhesive while avoiding contact with your fingernails to prevent damaging the adhesive.

After doing a deep dive into flange inserts for ardo pumps these were recommended as the best fit and they are perfect for my flange fitting service .

A breast shield also known as 'Flange' is the cone shaped funnel that fits directly over your nipple, areola and breast. To measure your nipple, take a ruler or a measuring tape and check your nipple diameter ( without the areola). The size of the flange insert: This is measured in millimeters, and the size you need is based off of the fit for your nipples in a particular pump. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average.These inserts are popular for more shallow flanges like the Elvie as they are short enough to fit the flanges without requiring modification. Inserts should only be used when you cannot purchase a flange in your size and/or if you have better results with using an insert. The texture of the rim, and the internal tunnel, is somewhat grippy or tacky, with the outside being silky to allow it to slip into the silicone cups it was designed for. Made with 100% medical-grade silicone, CAKES adhere to your body using your natural body heat - not irritating adhesives. Our breast pump sizing inserts are designed to help optimize comfort and output for moms who measure smaller than 21mm.

In struggling with elastic nipples myself, I found there were no inserts on the market that worked with all of my pumps and were long enough to cover the stretch of my nipples. The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Never disregard professional medical advice or delay in seeking it because of something you have read or were provided by Save The Milk™. While the basic anatomy of a flange insert is fairly universal, the attributes of these different brands produce different results. These soft comfortable silicone breast enhancers with realistic raised nipples help boost cup size by 1~2 cups in an instant.

I’ve helped size thousands of moms and I knew that I was not alone in my quest for the perfect inserts. Sterilize before first use by submerging the inserts in a deep and wide pot of boiling water for 3-5 minutes. A variety of factors, from the elasticity and shape of your breast tissue and areola, to the dryness of your skin, to the suction levels you set your pump to will affect which style and size breast funnel will work best for you.