Comfort ‘n’ Confidence™ External Breast Prosthesis

Sizing and Fit

How do I measure for cup size?


The band size is needed to calculate your cup size.

  • Measure in inches.
  • Wrap the measuring tape around your ribcage, underneath your bust line (or breasts).
  • Ensure the tape is straight and flat across your back.
  • Pull the tape snuggly, and do not hold your breath when measuring.
    • Even measurement – add 4 inches example: 34 + 4 = 38
    • Odd measurement – add 5 inches example: 31 + 5 = 36
  • For measurements over 35 inches, you may want to add only 2 if even or 3 if odd to determine band size.
    • Even measurement – add 2 inches example: 36 + 2 = 38
    • Odd measurement – add 3 inches example: 39 + 3 = 42


    Measure the breast side that has not had surgery.

    Start at the centre of your chest (breast bone) and place the tape over the fullest part of the breast to the centre of your back.

    Double this measurement example: 20” X 2 = 40

    The difference between Band Size and Breast Size is your cup size.

    Example: 40” – 38” = 2″ which is a B cup (see points below) your bra size would be 38B.

    • 1″ = A cup
    • 2″ = B cup
    • 3″ = C cup
    • 4″ = D cup
    • 5″ = DD cup
    • 6″ = DDD cup


    Measure the band size as indicated.

    For cup size – you can decide. Keep in mind your body shape and size and what you are most comfortable with.

    How do I insert the prosthesis in my bra?

    Place your Comfort ‘n’ Confidence™ external breast prosthesis front facing (the stitching sections the prosthesis into three parts where the largest section is considered the top of the prosthesis) into the cup of your desired Bra. The back of the prosthesis should be against your skin. Adjust the placement of the prosthesis to the most comfortable position. If it is too full remove some of the fill.

    I am on the cusp of medium/large size what should I choose?

    The Comfort ‘n’ Confidence™ external breast prosthesis is customizable, so you can add or remove fill to adjust the shape and the fullness. We advise choosing the larger size as overfilling the prosthesis can distort its shape.


    How do I clean my prosthesis?

    Do not wring the prosthesis!

    Bra Types

    What types of bras can I wear with my prosthesis?

    Your Comfort ‘n’ Confidence™ external breast prosthesis was designed to be worn in regular bras. Mastectomy lingerie and pocketed bras are not necessary, but can still be used. You can place your prosthesis into the “pocket” of a mastectomy bra if necessary. Underwire is also not required. Avoid bras with deep cleavage or demi-cups, as they may not properly hold the prosthesis.


    Are breast prostheses covered by Canadian health care?

    Provincial health insurance coverage varies from province to province. Some provinces have special programs in place to help cover the costs. Here is an excellent resource to learn more CBCN’s FinancialNavigator

    If you have private insurance, you may have coverage for breast prostheses. Call your private insurance provider to inquire what your plan covers regarding breast prosthetics and garments.