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

This same 300cc, 350cc, and 400cc kit is also available with Extra Small (XS), Medium (M), Large (L), and Extra Large (XL) Pocket Bras. Choose the bra size that best matches your current fit.

A Little Smaller? If you're considering less fullness, explore our 250cc vs. 300cc vs. 350cc Breast Implant Sizer Kit with Small Bra. This shifts all three comparison volumes down by 50cc.

A Little Larger? If you'd like to experience fuller options, explore our 350cc vs. 400cc vs. 450cc Breast Implant Sizer Kit with Small Bra. This shifts all three comparison volumes up by 50cc.

300cc vs. 350cc vs. 400cc Breast Implants: What's the Difference?

These three volumes let you compare a 100cc range, with 50cc increments between sizes. The 300cc pair is the smallest option, 350cc provides a middle reference point, and 400cc is the fullest option in this kit.

Your existing breast tissue, chest width, clothing, and body proportions all influence the appearance of external sizers. Comparing the three volumes on your own body can help you identify which external silhouette you prefer.

Is There a Noticeable Difference Between 300cc and 350cc?

There can be. Some women notice a change in fullness or projection, while others find the difference relatively subtle under everyday clothing. Comparing both sizes on the same body is more useful than comparing photographs of different women.

For more guidance, read our Breast Implant Sizing Guide.

How Does 400cc Compare With 300cc?

400cc represents approximately 33% more volume than 300cc. That does not mean breasts will look 33% larger. Appearance depends on anatomy, implant dimensions, and other factors that external sizers cannot reproduce.

Will 350cc Breast Implants Give Me a C or D Cup?

There is no reliable conversion between implant volume and bra cup size. A 350cc implant may produce different results depending on your starting breast volume, chest dimensions, implant profile, and surgical technique. Oumènta sizers help you explore external volume, not predict your eventual cup size.

Why Wear Breast Implant Sizers at Home?

Trying sizers briefly during a consultation can be helpful, but your first impression may change after spending more time with a particular volume.

Wear the sizers with fitted tops, casual outfits, work clothes, and other clothing you regularly wear. Compare the front, side, and three-quarter views, and repeat the comparison over several days if you wish.

Choosing Your Small Pocket Bra

This kit includes the Small Oumènta Pocket Bra, designed with internal pockets to hold each sizer pair in position. The same Small bra works with all three included volumes, allowing you to compare sizes without changing bras.

Choose Small based on your current bra fit, not the cup size you hope to have after surgery. A properly fitting pocket bra helps keep the sizers positioned consistently as you compare 300cc, 350cc, and 400cc.

If Small does not match your current fit, consider another Pocket Bra size using the links above. The goal is to compare the sizers comfortably and consistently, rather than force a particular bra size.

Explore Individual Sizer Volumes

Explore our individual 300cc breast implant sizers, 350cc breast implant sizers, and 400cc breast implant sizers pages for more information about each volume.

Is 50cc a Noticeable Difference in Breast Implant Size?

It can be, although the effect varies from person to person. Comparing the three sizer volumes under the same clothing can help you see how the differences appear on your body.

Is 400cc Considered a Large Breast Implant?

Not necessarily. Its appearance depends on body proportions, existing breast tissue, implant profile, and other factors.

Can I Wear Oumènta Sizers for a Full Day?

You can try them during normal daily activities for as long as feels comfortable. Remove them if you experience discomfort, and repeat the comparison on another day if you wish.

Can These Sizers Predict My Surgical Results?

No. They demonstrate external volume and appearance but cannot predict postoperative shape, cup size, or surgical outcomes.

What if I Want to Try Sizes Outside This Kit?

You can explore neighboring pre-curated kits with 250cc, 300cc, and 350cc or 350cc, 400cc, and 450cc sizers using the links above.