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Size Guide

Period Underwear Size Chart (see swim below)

AWWA underwear is made true to size so your best bet is to use our size chart below and consider the size of underwear you currently wear. The most important measurement is your hips, as this is where the underwear sit.

To ensure the leak proof technology does its job our underwear fits slight more snug than your regular underwear. Unsure? Email us:


AWWA Period proof swimwear sizing

We recommend you select your period proof bikini swimwear set based on your underwear size, as our bikini tops are fully adjustable and designed to fit boobs of all shapes and sizes. 

When deciding on your period bikini bottom size the most important measurement is your hips, as this is where your period swimwear sits. Take your hip measurement just below your hip bones on the widest part of your bottom. Waist measurement is taken from just below your belly button. Our period proof swimwear is designed to fit snugly to eliminate leaks.


Hip & Waist measurements

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