300cc vs. 350cc vs. 400cc Breast Implant Sizers | XS Bra

Drag the slider to compare the same model without sizers and wearing 350cc Oumènta breast implant sizers.

External sizing demonstration only. Not a prediction of surgical results.

The same 300cc, 350cc, and 400cc sizer combination is available with these other Pocket Bra sizes:

• Small (S) Pocket Bra
• Medium (M) Pocket Bra
• Large (L) Pocket Bra
• Extra Large (XL) Pocket Bra

Choose your Pocket Bra size based on your current fit, not your desired breast implant volume.

A Little Smaller? Explore our 250cc vs. 300cc vs. 350cc Breast Implant Sizer Kit with XS Bra .

A Little Larger? If you'd like to explore additional fullness, read our 350cc vs. 450cc breast implant comparison .

Want a different combination? Build your own custom Oumènta breast implant sizer kit using three available volumes from 200cc to 500cc.

300cc vs. 350cc vs. 400cc: How Different Are They?

300cc: The smallest option in this kit. For a woman with a smaller frame, this may already create a noticeably fuller silhouette. It's a useful starting point when you're interested in a significant change but uncertain about going larger.

350cc: The middle option, offering approximately 17% more volume than 300cc. This lets you explore whether another 50cc provides the additional fullness you're looking for.

400cc: The largest option, with approximately 33% more volume than 300cc. On a petite frame, comparing this volume with the smaller options may be particularly useful when evaluating proportions and clothing fit.

Remember, implant volume alone doesn't determine surgical appearance. Your chest width, existing breast tissue, implant profile, and surgical placement all influence the eventual result.

What If 400cc Looks Great but Feels Too Big?

Perhaps you love the appearance of fuller breasts in photographs, but wonder how you'd feel with that silhouette throughout an ordinary day.

Try 300cc with a fitted T-shirt or your favorite dress. Then wear 350cc during similar activities. Finally, compare 400cc while driving, walking, carrying groceries, or doing comfortable exercise.

Notice more than the mirror. Does the larger volume change how your clothes fit? Does 350cc seem like the right balance? Or do you discover that you actually prefer the fullness of 400cc?

Wear each size for as many days as you need to explore your breast implant size preferences. You can switch back and forth, revisit your favorites, and take your observations to your plastic surgeon.

Research Supports Comparing Sizes Before Surgery

Still wondering whether a larger volume would be right for you? Read our 350cc vs. 450cc breast implant comparison to explore how additional volume can affect your preferences.

For more guidance, visit our Breast Implant Sizing Guide .

What If You Prefer Smaller Differences?

If you're narrowing your choices, consider comparing 325cc, 350cc, and 375cc.

Oumènta offers individual breast implant sizer pairs in 25cc increments from 200cc to 500cc.

Is 400cc too big for a petite woman?

Not necessarily. A woman's height alone doesn't determine which implant volumes are appropriate. Chest width, existing tissue, implant dimensions, and surgical technique all matter. Comparing 400cc external sizers with 300cc and 350cc can help you explore your preferred silhouette, but only your surgeon can evaluate surgical suitability.

How noticeable is the difference between 300cc and 350cc?

350cc contains approximately 17% more volume than 300cc. The difference may be more or less noticeable depending on your proportions, clothing, and the shape of the external sizers. Trying both sizes at home can help you compare them.

Will 350cc breast implants look natural on a small frame?

Natural-looking results depend on anatomy, implant dimensions, profile, placement, and your personal goals. The 350cc sizers help you explore external fullness, but cannot predict your postoperative appearance.

Should I choose 300cc or 400cc breast implants?

These volumes differ by 100cc, or approximately 33%. Comparing them under your own clothing may help you understand whether you prefer a more modest or fuller external silhouette. Your surgeon should help determine which implant options are appropriate for your anatomy.

What if I want to compare 325cc, 350cc, and 375cc instead?

Our custom breast implant sizer kit lets you choose any three volumes from 200cc to 500cc in 25cc increments. It's a useful option when you're narrowing your preferences and want to compare smaller differences.