Find your perfect Fit


Size Guide

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Bra Sized Based for

Superior Fit

Match your current bra size to the best insert size for a secure, all-day stay.

Mastectomy Fit Tips

Refer to your previous bra band and cup size. Or refer to the remaining breast band and cup size. Adjust up or down for your idea coverage and size. All mastectomy forms and inserts must be worn in pockets for added stability.

Wearing Tips

for the Perfect Insert Fit (Non-Mastectomy)

Snug fit

There is no space between the blue side and the breast. No breast spillage around the insert. Insert appears to cup and hold the breast well.

Too big – size down

There is space between the blue side and the breast. The insert sits too high and doesn’t cup the breast fully. This can create a visible lump in clothing.

Too small – size up

The insert doesn’t fully support the breast. Breast tissue spills around it, and the edge may show through clothing.

Watch & Learn:

Find Your Fit

Too big? Too small? Just right? These short clips show it all.

Perfect Fit

Too Big

Too Small

Compare Styles to Find Your Best Fit

Not sure which insert is right for you? Use this quick comparison to see the dimensions, weight, and thickness of each style and size.

Table comparing Half Moon Classic and Plus insert sizes and dimensions.
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Let's get you inserts that actually fit and stay in place.

Personalized for your bra style & size

Matches your coverage & comfort needs

Smart match backed by real reviews

Find Your Fit