Detachable

£27.95
Detachable - Heavy Absorbency

Wear on heavy days

holds 2 tampons' worth

  • Wear for up to 12 hours on heavier days
  • Holds four tampons' worth or 20ml
  • For periods, leaks & incontinence 
  • Great for day and night.
  • OEKO-Tex certified materials

Buy more + save more.

Detachable

Wear on heavy days

holds 4 tampons' worth / 20ml

£27.95

  • Wear for up to 12 hours on heavier days
  • Holds four tampons' worth or 20ml
  • For periods, leaks & incontinence 
  • Great for day and night.
  • OEKO-Tex certified materials

Buy more + save more.

Try them risk-free!

If you're not period-ing better within 60 days, we'll give you your money back.

Style + fit

Ever wanted to change your undies without getting completely undressed? 


Our simple side clasps allow you to change anywhere, without stepping foot off the ground. 


So whether you're between meetings, on a long flight, or just had a sweaty work out - we got you covered.

Fabric + care

Inner and Outer: 95% Modal 5% Elastane, Trim: 100% Polyester,  Gusset: Absorbent blend, breathable PUL


Care: Quick rinse 🚿 40 degree wash 👌🏽 Hang to dry ✌🏿 No bleach or fabric softener ⚠️

Sustainably sourced

Fast + free UK shipping

Ethically manufactured

We give to girls in need

Customer Reviews

Based on 14 reviews
86%
(12)
14%
(2)
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L
L.R.
Flow: Moderate
Products used: FLUX Undies, obvs!, Tampons
Great, versatile & attractive

Love the look and fit of these undies. Felt protected, easy to remove and comfy to wear. I will definitely be buying more. Please add more colors soon!

M
M.
Flow: Moderate
Products used: FLUX Undies, obvs!, Tampons, Disposable pads
Give them a go!

Pleasantly surprised by how they are working. No leaks and really absorbant. It's great to be able to cut down on disposable products.

N
N.
Flow: Heavy, Moderate
Products used: FLUX Undies, obvs!, Tampons
Great but...not as good as the briefs.

So I bought the briefs (2 ) and one set of detachables, and then ordered another set of both just so I had spares in case of leakages and heavy days.
I have to say that the detachable ones seemed not to work as well. The pad sits lower down, and as such during the night I had some leakage. They are not as comfortable as the briefs either. Especially at night the catches were a little tight on the hips and left indents.
I'll continue to use the briefs and the detachable pants on lighter days/nights as I really believe in the sustainable/eco responsible future ...just wish they were around when I was in my teens.

G
G.
Flow: Heavy, Moderate
Products used: FLUX Undies, obvs!, Tampons

Initially I was worried about wearing FLUX Undies with light/tight clothing, however I needn't have been concerned! Even on my heaviest days they work perfectly, as well as being comfortable and stylish.

  • How They Work
  • Money-Back Guarantee
  • Find Your Size
  • FAQ's

Moisture-wicking

Soft material wicks moisture and dries fast

Anti-microbial

Prevents bacteria building up and keeps smells away

Super absorbent

Absorbs liquid without feeling bulky or heavy

Leak-proof

Breathable layer prevents leaks and stains

Moisture-wicking

Soft material draws moisture away and dries fast

Anti-microbial

Prevents bacteria building up and keeps smells away

Super absorbent

Absorbs moisture and liquid without feeling heavy or bulky

Leak-proof

Breathable layer prevents leaks and stains all day

try our period-proof undies risk-free

if you're not period-ing better within 60 days, we'll give you your money back. no questions asked.

what is your return policy?

We offer free returns and exchanges within 60 days of purchase, no questions asked! Just visit our Return & Exchange Centre to get started.

how long can i wear them?

If cared for properly, our undies are likely to have a maximum tech performance of approximately 3 years. This means washing them on a 30-40 degree wash with the rest of your delicates, never using bleach or fabric softener, and hang drying! In terms of length of wear, we measure our undies by absorbency with our highest absorbency styles holding 4 tampons worth of fluid. For some customers, that means wearing them the whole day and for others that may mean carrying an extra pair of FLUX Undies as a backup. 

how do they work?

FLUX Undies are underwear that absorbs your period. Every pair is made with technology that absorbs your flow, wicks moisture, controls odour, and prevents leaks — leaving you fresh and dry. Take a look at our How it Works page to learn more.

how do i find the right size?

We recommend following the hip measurement, as most of our styles sit on the hips. Be sure to measure your hips at their widest point to find the most accurate size for you! In case you don't have a tape measure, you can use the size you usually are most comfortable with for your underwear. We recommend the undies fit snuggly, but not so tight that it's uncomfortable. For reference, you can check out our size chart.