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FLUX Period-Proof Underwear - Boyshort

FLUX Undies »

Product code: 449135
5.0 / 5 stars based on 4 ratings


Purchase Options

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Product Description

FLUX period pants are the ultimate in zero waste feminine care, designed to hold up to 4 tampons worth of liquid. The period pants are made from soft and sustainable modal which is comfortable to wear, and the boy short style offers full coverage if that’s your preference. Suitable for vegans and free from any synthetic fragrances, parabens and other nasty chemicals.

The period pants are made with a moisture-wicking soft top layer to keep you fresh and dry, a second anti-microbial layer to keep you clean, and a leak proof breathable PUL barrier – perfect for periods, leaks and incontinence.

FLUX undies use Oeko-Tex certified fabrics and the pants are ethically made in China, in a family run factory that is ISO and BSCI approved, where employees are given proper pay and adequate rest breaks.

With FLUX’s ‘By You, For Her’ scheme, a girl in need will receive a reusable menstrual cloth pad for each pair of FLUX undies bought.

Wear up to 12 Hours
Holds up to 20ml, or 4 tampons worth

95% Modal 5% Elastane
Non Woven Absorbent Fabric, Breathable PUL layer

Ethically made in China
Packaged in recycled and recyclable cardboard box

Please note due to hygiene reasons we cannot accept returns of period underwear unless faulty or clearly unopened.

Care Instructions

After use, rinse until water runs clear. Machine wash at 40 degrees max. Hang to dry or dry on radiator. Do not tumble dry, don't use fabric softener, don't use bleach.

Product Ethics & Tags

The FLUX Period-Proof Underwear - Boyshort product ethics are indicated below. To learn more about these product ethics and to see related products, follow the links below.

4 Customer Reviews

View all 4 Reviews » Viewing 3 of 4 Reviews ordered by  

5/ 5 statrs
Submitted by   on 13th Mar 2021

Verified product owner

Love those! They feel great, wear well, wash well and you can move around in them (I teach yoga) and feel totally safe. I usually wear them on my heaviest flow day. When washed they do take a couple of days to dry.

1 out of 1 found this review helpful

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5/ 5 statrs
Submitted by   on 1st Jan 2021

Verified product owner

I wish these had been available 30 years ago - imagine the amount of money and waste I could have saved! Very comfortable, excellent for outdoor activities, I can set off for a long day of walking or cycling without the hassle of changing pads/tampons in the great outdoors! Just bought some for my daughter. Well done Flux!

2 out of 2 found this review helpful

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5/ 5 statrs
Submitted by   on 5th Oct 2020

Verified product owner

These are great. Not only are they washable and reusable, but much easier to use than any pads. My daughter finds these perfect for school - no need to try to discreetly take anything with her to the toilets.

6 out of 6 found this review helpful

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About FLUX Undies

FLUX Undies Period-proof underwear that works! FLUX make functional underwear for periods, leaks, and stains - their stylish undies hold up to 4 tampons' worth, keeping you covered day and night. They're more planet-friendly too, eliminating the need for disposable pads or tampons.


  • Standard UK Delivery - £0.99
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