How to Read a Breast Implant Size Chart

An implant chart can look like a spreadsheet someone forgot to explain. There are model codes, rows of numbers, and several profiles that all seem to include the size you were searching for.

The good news is that you only need a few pieces of information to start reading it.

The chart is a reference for your consultation. Your examination determines which of its options are appropriate to consider.

Start with the brand and product family

Before looking at the numbers, check the name at the top.

“Mentor 350cc” is incomplete information. A brand can have several product families, each with different designs. You need the family and profile to identify the device.

Also check the country and document date. A catalog for a different market may include products or dimensions that aren't part of the options your surgeon offers.

The FDA's implant labeling directory links approved US device information. A listing establishes regulatory information, while your surgeon and manufacturer can confirm current availability of a particular model.

Understand the columns

Most charts become easier to follow when you know what these headings mean:

If the table includes a sizer code, keep it separate from the implant code. A device used for sizing isn't the permanent implant.

Read across one row before comparing rows

Choose one complete row and translate it into a sentence.

Here is a hypothetical example, not a manufacturer's specification:

You could read that as: “Example A is a moderate-profile implant with a listed volume of 300cc, a base width of 12cm, and projection of 3.8cm.”

That sentence doesn't tell you your future cup size, cleavage, or upper fullness. It describes the device.

Once you can read one row, the rest of the table feels much less intimidating.

Compare one variable at a time

A useful comparison starts with a question.

If you want to understand profile, compare implants at similar volumes and look at how width and projection differ. If you want to understand the options around a particular width, compare that width across profile columns.

Try this hypothetical second row:

Compared with Example A, the volume is the same while the base is narrower and projection is greater. That illustrates how similar volume can be distributed differently.

It doesn't establish which device fits you. That requires an assessment of your anatomy and tissue.

Why a nearby CC number may be missing

Catalog sizes come in defined increments. A product family might have one size just below your preferred number and another just above it.

That doesn't mean a missing number is a special-order option or that the neighboring sizes are interchangeable. It means the manufacturer has specified those particular devices.

Ask your surgeon to explain the available choices using their actual dimensions. You may discover that the width and shape are more relevant than whether the number ends in 25 or 50.

Saline charts need an extra step

A saline implant chart may show both a device size and an allowed fill range.

Some structured saline charts also include the volume of the empty device in total implant volume. Serene's chart, for example, separates the empty implant, inner saline volume, outer saline range, and total volume. The manufacturer chart shows how these quantities relate.

This matters when you read a surgical record. The amount of saline added isn't always identical to the total implant volume reported on the chart.

Ask whether a number refers to shell size, saline fill, or total volume. Those terms should be kept distinct.

What a chart can't tell you

A chart doesn't measure your skin, tissue thickness, breast position, chest shape, or existing asymmetry. It also can't predict how a healed breast will look in a particular bra.

The listed projection is measured for the device under the manufacturer's stated conditions. Your body adds tissue coverage and its own shape.

That is why chart reading works best alongside an examination, sizers, and a discussion of the features you want.

Make a comparison card

For each shortlisted option, save:

• Brand and product family.

• Complete model or catalog number.

• Surface and gel or fill type.

• Profile, volume, width, and projection.

• Which breast it is intended for, if the sides differ.

• The source document and its date.

Then write your question underneath: “What would I notice between these options?” or “Why does this width suit my plan?”

You don't need to memorize the catalog. A clear comparison card gives you something reliable to refer to when the appointment is over and all those similar numbers start blending together.