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Brooks Women's Bras

Size	XS	Small	Medium	Large	XL	XXL
Bra Size	30A - 30C	30D - 32C	32D - 34C	34D - 36C	36D - 38C	38D - 40C

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Larger than a D cup? Brooks recommends shopping for bras that are band and cup sized (example: 34 C) rather than alpha sized (example: M) to find your best fit.

How to measure

Rib Cage: Start your measurements by finding your band size. Measure around your rib cage where the bottom band would sit. The tape measure should feel quite snug. If you get a fraction, round down to the nearest inch. Using this chart, find your corresponding band size based on your measurement.
Bust: Next, find your cup size. Measure around the fullest part of your boobs — which may not be the center — and round up to the nearest inch. Then subtract your rib cage measurement. The difference in inches is your suggested cup size. If you get a fraction, round up to the larger size.

Brooks Fit Guide

Bottom band: Make sure the bottom band is snug and lies flat across your back — not riding up or loose around your rib cage.
Cups: The cups should fit smoothly — spilling out the sides or front means the cup size is too small, while extra space means the cups are too big.
Straps: Straps should lie smoothly against your skin, without sliding around or digging uncomfortably into your skin.

Sister size:

Consider shopping by sister size. Sister sizes are bra sizes that are not your true cup or band sizes, but they are equivalents. For example, the sister sizes of a 36D include 34DD and 38C. This makes shopping easier and can help you find the right bra that fits you best. Continue on to the size chart to find your sister size.

Brooks Convertible 2.0 Sports Bra

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