but, how does it work?

(it's the question everyone's asking)

clever underwear that absorbs your period

clever underwear that absorbs your period

Our reusable, washable underwear is designed to completely replace disposable pads and tampons, giving you protection when you need it most.

They look like regular undies, but they work like *magic*

the secret's in our built in tech

Each pair of undies is made using our built-in triple layer tech that keeps you fresh, dry, and protected - through even the heaviest of flows.

the secret's in our built in tech

Every pair of our undies are made using built-in triple layer tech that keeps you fresh, dry and protectedthrough even the heaviest of flows.

moisture wicking

the top layer wicks moisture – keeping you feeling dry all day


the fabric's construction prevents the build up of bacteria and smell

super absorbent

this clever layer absorbs and locks in up to four tampons worth of flow


breathable waterproof fabric prevents leaks and stains all day long

how will FLUX Undies work for me?

period protection

protects against leaks and stains during your period


coverage from spotting


daily coverage for postpartum bleeding


coverage for regular discharge


quick-dry action for sweating


coverage for incontinence leaks

what people think of our undies

how to care for your undies

Caring for FLUX Undies is a breeze, and takes just two simple steps. First, throw them in the wash, then hang to dry. 

1. wash

2. dry

Caring for FLUX Undies is a breeze, and takes just two simple steps. 

Throw them in the wash, then hang them to dry. 

how much can they absorb?

Depending on the style, our unique built-in panel absorbs up to 4 tampons worth (20-25ml). You can wear them for up to 12 hours, all day or all night.

other questions people ask...

is it hygienic to wear them all day?

We get asked this question a lot, and the answer is yes! Our undies contains unique antimicrobial properties which naturally occur due to the construction of the fibres, and there are no added coatings of any type, so your skin is safe.

will they smell?

Nope! The antimicrobial properties prevent bacteria building up and keep smells far away!

what are they made from?

Main body Micro Modal, which is super eco and made from the beech tree 

Built-in tech Absorbent fibre blend and breathable PUL.

All our fabrics are OEKO Tex which means they are certified free of harmful chemicals and are safe for your skin.

where are they manufactured?

Our undies are designed by a family run factory in Southern China. We visit our factories regularly and make sure the workers are paid fairly and work in safe conditions! Find out more information on our ethical manufacturing here.

swap your disposables and make the switch

Changing your current routine can be feel a little tricky to begin with, which is why we recommend that you try our period-proof undies at home first to get used to them and find out how they work for you!

FLUX Undies act as a complete replacement to disposables and our heavy styles can be worn alone, replacing 4 tampons worth for up to 12 hours. 

Why not start with our best-selling Bikini?

holds 4 tampons worth

so, what you waiting for?

join the revolution