FIND YOUR BRA SIZE
in just 5 minutes with two measurements.
Measure with no bra on or in a non-padded everyday bra, using a soft tape measure.

MEASUREMENTS EXPLAINED
UNDERBAND
Underband measurements are in even inches - 28, 30, 32, 34 etc.
So if you measure with an even number, that is your underband size. If you measure an odd number you will be the next even number e.g. 31 or 31.5 becomes a 32 underband.
MEASUREMENTS EXPLAINED
CUPS
A cup size is the difference in inches between your bust measurement and your first underband measurement. e.g. 30 inch underband / 36inch cups = +6
This is a 30E bra size. See our grid below which shows this visually.


If you are coming out at a different size to what you expected, just arrange a fit check with us.
If you're just outside our range, check to see if you can order your sister size.
SISTER SIZING
There are two simple principles to 'sister sizing':
1. If you go up a back size, go down a cup size. e.g. a 30DD becomes a 32D.
2. If you go down a back size, go up a cup size. e.g. a 36DD becomes a 34E.
If you go up a back size but stay the same cup size, you'll notice extra room in the cup. If you go down a back size but stay the same cup size, the opposite will happen, and you'll notice the cup is tighter.
checking the fit
Once you're in your Impact sports bra, make sure you've adjusted yourself to check its a good fit.
Scoop your boobs into the cups from the edges, adjust the underband if needed and have the straps done up tight enough! See what 'good' looks like below.

cups
✔️ Boobs comfortably inside 👆
✔️ WRAPA® tech sits flat 👆
✖️ Boobs spilling out the side / showing lots of cleavage (means cup size is too small)
✖️ Gaping fabric (means cup size is too big)

underband
✔️ Fits firmly on the loosest hook 👆
✔️ Level all the way around 👆
✖️ Riding up your back

straps
✔️ As a measure, the hook should be level with or above your armpit. 👆
✔️ Fits firmly 👆
✖️ Digging in (then loosen)️ / too loose (then tighten)
FIT CHECK SERVICE
Our fit check service is an easy way to get comfort you're in the right size. Simply drop us an email to hello@pebeactive.com with:
1. Details of i) the bra size you bought, ii) your normal bra size, and iii) your underband measurement.
2. Photos of you in the impact sports bra: front on and side on. Remember to keep your arms relaxed and slightly back so we can see the bra.