400cc vs. 450cc vs. 500cc Breast Implant Sizers | XL Bra

This same 400cc, 450cc, and 500cc kit is also available with a Large (L) Pocket Bra. Choose the Pocket Bra size that best matches your current fit.

A Little Smaller? If you're considering slightly less fullness, explore our 350cc vs. 400cc vs. 450cc Breast Implant Sizer Kit with XL Bra. It shifts all three comparison volumes down by 50cc while keeping the same Extra Large Pocket Bra.

Want a Different Combination? You can also build a custom Oumènta kit with three sizer volumes of your choice, available in 25cc increments from 200cc to 500cc.

400cc vs. 450cc vs. 500cc Breast Implants: What's the Difference?

These three volumes cover a 100cc range, with 50cc increments between sizes. The 400cc pair is the smallest option, 450cc provides a middle reference point, and 500cc is the fullest option. Comparing all three can help you decide how much external fullness you prefer.

400cc, 450cc, or 500cc: Three Levels of Fullness

400cc: A starting point for exploring a fuller external silhouette. Try this volume first, then compare whether the additional fullness of 450cc or 500cc appeals to you.

450cc: Contains 12.5% more volume than 400cc. This middle option can help you evaluate whether an additional 50cc creates the appearance you prefer without moving directly to 500cc.

500cc: Contains 25% more volume than 400cc. Comparing the two ends of this range allows you to explore a meaningful difference in external fullness and clothing fit.

These percentages describe volume differences, not predicted changes in breast appearance. Existing breast tissue, chest dimensions, implant profile, and surgical placement all influence surgical outcomes.

Does 500cc Look Different in Everyday Clothing?

Perhaps 500cc looks appealing in a before-and-after photograph. But will you prefer that volume when wearing your own wardrobe?

Start with 400cc in a fitted T-shirt. Switch to 450cc and compare the same outfit. Then try 500cc. Look at your silhouette from the front, side, and three-quarter angles. Notice how each volume changes the appearance and fit of your clothing.

Repeat the comparison with a dress, work blouse, or favorite casual outfit. A size you love in one outfit may create a different impression in another. Wear each size for as long as feels comfortable, and repeat the comparison over several days if you wish.

Explore the Difference Between Looking Fuller and Feeling Comfortable

When you're comparing 400cc, 450cc, and 500cc, appearance is only one part of the decision. The additional external volume and weight may also affect your experience during normal activities.

Walk, sit, drive, or perform other comfortable everyday activities while the sizers are securely positioned. Notice how each volume feels and whether your preferences change after wearing it for a while.

Oumènta sizers can help you explore differences in external volume and weight, but they cannot reproduce the exact movement, weight distribution, or feel of surgically implanted breasts.

For a more detailed comparison, read our 400cc vs. 500cc breast implant guide.

Why the Extra Large Pocket Bra Matters

The Extra Large Oumènta Pocket Bra has internal pockets designed to hold the sizers in position. Using the same bra for all three volumes makes it easier to compare sizes consistently without changing the fit of your bra between try-ons.

Choose XL based on your current bra fit, not the cup size you hope to achieve after surgery. An Extra Large bra does not mean you need 500cc implants, nor does it indicate that any particular implant volume is appropriate for your anatomy.

A comfortable, secure fit helps keep the sizers positioned as you move between 400cc, 450cc, and 500cc. If XL does not match your current fit, explore the same three-volume kit with another Pocket Bra using the links above.

Research on Comparing Breast Implant Sizes Before Surgery

If you're trying to decide between the two larger volumes in this kit, explore our 400cc vs. 500cc breast implant comparison. For more general guidance, visit our Breast Implant Sizing Guide.

Want to Compare 425cc or 475cc?

Sometimes the comparison you want isn't limited to 50cc increments. Oumènta offers individual sizer volumes in 25cc increments from 200cc to 500cc, including 425cc and 475cc. These intermediate sizes can help you refine your preferences.

Explore Individual Sizer Volumes

Visit our individual 400cc breast implant sizers, 450cc breast implant sizers, and 500cc breast implant sizers pages to learn more about each volume.

How much bigger is 500cc than 400cc?

500cc contains 25% more volume than 400cc. The visible difference depends on your proportions and existing breast tissue. Comparing the external sizers under the same clothing can help you explore the difference in fullness.

Is 450cc a good compromise between 400cc and 500cc?

450cc falls exactly halfway between 400cc and 500cc by volume. Whether it is your preferred size depends on your goals and anatomy. Trying all three sizer volumes helps you compare their external silhouettes before discussing options with your surgeon.

Will 500cc breast implants be too heavy for me?

That depends on your anatomy, implant characteristics, and individual circumstances. External sizers allow you to explore weight differences but cannot predict the long-term physical effects of breast implants. Discuss weight-related concerns with your plastic surgeon.

Do I need an Extra Large bra to try 500cc sizers?

No. Choose the Oumènta Pocket Bra size that fits you appropriately. The same sizer volume can be used with different Pocket Bra sizes. An Extra Large bra is not required simply because you are comparing 500cc.

Can I compare 425cc, 450cc, and 475cc instead?

Yes. Our custom breast implant sizer kit lets you select three volumes between 200cc and 500cc in 25cc increments, including 425cc and 475cc. This allows you to explore smaller differences when narrowing your preferences.