350cc vs. 400cc vs. 450cc Breast Implant Sizers | L Bra

Three Sizes, Three Different Experiences

350cc: The smallest volume in this kit. It gives you a starting point for exploring fullness without immediately choosing a larger option. Depending on your existing breast tissue and proportions, this may already create a substantial change in your external silhouette.

400cc: The middle choice, offering approximately 14% more volume than 350cc. It's an opportunity to discover whether an additional 50cc gives you the fullness you're looking for.

450cc: The largest option, with approximately 29% more volume than 350cc. Comparing these two volumes may reveal differences in how your clothing fits and how you experience external fullness throughout the day.

These are volume comparisons, not predictions of surgical results. Your anatomy, existing breast tissue, implant dimensions, profile, and placement influence your eventual appearance.

Will 450cc Feel Too Full for Your Everyday Lifestyle?

A fuller silhouette might look appealing in a photograph or a special-occasion dress. But what about when you're working, exercising, or simply going about your day?

Try 350cc with a fitted T-shirt, then compare 400cc in the same outfit. Finally, wear 450cc and notice how the external fullness changes.

Pay attention when reaching for the steering wheel, walking, carrying groceries, or performing comfortable exercise. You may prefer the additional fullness of 450cc, or discover that 400cc offers a balance you enjoy more.

Wear each size for as many days as you need. Switch between them, revisit your favorites, and compare how you feel in different situations.

Consider the Difference in Weight, Not Just Appearance

Moving from 350cc to 450cc represents an additional 100cc of volume per breast. For silicone implants, that corresponds to approximately 100 grams of additional weight per implant, or about 200 grams (7 ounces) for a pair. Actual implant weights vary.

Oumènta sizers let you explore differences in external volume and weight during everyday activities. They cannot reproduce the exact movement, weight distribution, or feel of surgically implanted breasts.

Research on Preoperative Breast Implant Sizing

For a closer look at the difference between two of the volumes in this kit, read our 350cc vs. 450cc breast implant comparison .

You can also explore more questions about implant volume and sizing in our Breast Implant Sizing Guide .

What About 375cc or 425cc?

If you're deciding between 350cc and 400cc, you may want to compare 375cc.

Likewise, 425cc offers an intermediate option between 400cc and 450cc.

Oumènta offers individual breast implant sizers in 25cc increments from 200cc to 500cc, allowing you to refine your comparisons.

Is 400cc noticeably bigger than 350cc?

400cc contains approximately 14% more volume than 350cc. Whether the difference appears substantial depends on your proportions, existing breast tissue, and clothing. Trying both external sizer volumes helps you explore the difference in fullness.

Will 450cc breast implants feel too heavy?

That depends on your anatomy, implant characteristics, and individual circumstances. Oumènta sizers allow you to explore external weight and volume differences, but cannot predict how surgically implanted breasts will feel or affect your body.

Should I choose 400cc or 450cc breast implants?

The difference is 50cc, or 12.5% more volume when moving from 400cc to 450cc. Comparing both sizes under your own clothing may help you understand your preferences. Your surgeon can assess which implant dimensions and volumes are appropriate for your anatomy.

Will 350cc, 400cc, or 450cc give me a D cup?

There is no reliable conversion from implant volume to bra cup size. Your starting breast tissue, chest measurements, implant profile, and placement influence the eventual result. Use the sizers to explore external fullness rather than expecting a specific cup size.

Can I choose 375cc, 400cc, and 425cc instead?

Yes. Our custom breast implant sizer kit allows you to choose any three volumes between 200cc and 500cc in 25cc increments, so you can compare smaller differences when narrowing your preferences.