Period Briefs

No! Our leak-free period underwear can be a total replacement for disposable products, such as pads, tampons, liners and menstrual cups. Our period underwear range includes different levels of absorbencies for every kind of flow.

Our period pants can hold from between 1 tampon to 5 tampons’ worth of fluid – approximately 35ml of liquid.

For most flows, fluxies period pants can be worn all day or all night (up to 12 hours) before they need to be changed. If you need help deciding which styles you should start with, we recommend taking our Find Your Fluxies quiz.

Yes! Our period pants and leak-free undies are designed to completely replace disposable products whilst remaining leak free. Depending on which style of period underwear you choose, you can wear fluxies for between 8-12 hours, remaining leak-free. If your period pants feel damp, it's time to change to a fresh pair.

At fluxies, we create innovative period products using smart solutions, that help elevate your every day, through comfort, form, and function.

Our machine-washable and reusable leak-free period underwear provides a sustainable alternative to single-use disposable products.

Each pair of fluxies features an absorbent gusset area that keeps you dry, using our reliable built-in tech — this consists of a moisture-wicking top layer, a super absorbent middle layer, and a leak-proof bottom layer.

Designed in a range of absorbencies and styles, there's something to suit everyone.

To learn more, check our How it Works page!

You can find the details of each underwear style on our size chart, which is listed on every product page.

We recommend following the hip measurements to find the most accurate size (measuring your hips at their widest point).

Your new period underwear should fit snugly enough so that leaks cannot escape, but not so tight that it feels uncomfortable.

Caring for fluxies period underwear is easy! When you've finished wearing them, simply toss them in the wash with the rest of your clothes, then leave them to air dry.

Make sure you stay clear of fabric softener and bleach, as this can affect the absorbency of the underwear!

Top tip: our customers love air drying their period pants in the sun or on the radiator for super quick results!

Fluxies period pants are all designed in our UK headquarters, whilst our fibres and products are produced via ethical manufacturing methods in our Guangdong, Fujian, and Austrian factories. Each factory and manufacturer has been assessed via on-site visits, to ensure their practices are up to our own standards and company values.

Distributed throughout the UK via trusted sellers and our own shipping team, we are confident in our products and are always taking steps to lessen our environmental impact even further. Learn more about our ethical manufacturing processes and our commitment to the environment.