Essential Brief - Heavy Flow
Essential Brief - Heavy Flow
Essential Brief - Heavy Flow
Essential Brief - Heavy Flow
Essential Brief - Heavy Flow

Essential Brief - Heavy Flow

Regular price £19.95
/
Shipping calculated at checkout.

FLUX Essentials™ Heavy Flow period pants look and feel like regular underwear but have the power to absorb your period and prevent leaks. This comfortable cotton underwear is quick-drying and super soft, bringing you next level comfort. 

The all-new FLUX Essentials™ line of period pants brings you comfortable cotton underwear with our signature built-in tech that absorbs up to 4 tampons' worth.

This new range uses excess left-over fabric which allows us to bring you a more affordable product whilst using fabric that would have otherwise gone to waste. One Essential Brief replaces at least 200 single-use disposables, making it a sustainable win-win.

Our mission is to help as many people as possible make the switch to sustainable period care, and our new Essential range makes our undies even more accessible to those wanting to make the switch.   

  • For Periods, Leaks and Incontinence
  • Holds 4 Tampons' Worth / 20-25ml
  • Wear For Up To 12 Hours Leak-Free
  • Soft, Stretchy and Comfortable
  • Lightweight and Quick-drying
  • OEKO-Tex Certified Materials
  • Free From Toxins, Chemicals and PFAS/PFOA

Materials: Body95% Cotton 5% Elastane Gusset: 100% Cotton, Breathable PUL Packaging: 100% Recycled and Recyclable Cardboard

🍃 Bleed Green: Each pair of our period pants replace 200+ disposables from going to landfill, reducing your waste by 99.5%

🤝 Giving Back: For every purchase, we give back to someone in need. Find out more about our #ByYouForThem giving back scheme here

We offer free shipping on all UK orders and free tracked shipping on International orders over £75.
For same-day dispatch and next day delivery, please place your order before 1pm.
All orders are dispatched from our UK warehouse using trusted couriers such as Royal Mail, DHL and DPD. 
 

Delivery options

UK

DPD Next Day Delivery Service 

Next day service, shipped by DPD tracked, £6.95

Royal Mail 1st Class Delivery Service 

1-2 days, shipped by Royal Mail tracked, £4.95

FREE Standard Shipping Service 

2-3 days, shipped by Royal Mail untracked

 

EU

*Free standard shipping is offered on all EU orders above £75 

Express Tracked Shipping Service 

1-2 days, tracked and signed, £14.95

Tracked Shipping Service under £75

3-5 days, tracked, £9.95

FREE Tracked Shipping Service under £75

3-5 days, tracked

 

USA & Canada

*Free standard shipping is offered on all International orders above £75

Express Tracked Shipping Service 

1-3 days, tracked and signed, £19.95

Tracked Shipping Service for orders under £75

5-7 days, tracked, £11.95

FREE Tracked Shipping Service for orders over £75

5-7 days, tracked

 

Rest of world

*Free standard shipping is offered on all International orders above £75

Express Tracked Shipping Service 

1-4 days, tracked and signed, £19.95

Tracked Shipping Service for orders under £75

5-7 days, tracked, £14.95

FREE Tracked Shipping Service for orders over £75

5-7 days, tracked

Think our period pants sound too good to be true? Take them on a risk-free trial for 60 days!

If our undies don't work as promised, let us know within 60 days and we'll refund you, no questions asked. The 60-day risk free trial applies to one worn pair of undies only. Refunds will be paid to the original payment method that was used to place the order.
🚿 Rinse after use.
🧽 Machine wash on 30-40 degrees.
 🍃 Hang to dry or dry indoors on a radiator.
⚠️ Do not use fabric softener or bleach. No tumble drying.
And that's it! Your FLUX Undies are ready to wear again!

Our Period Pants Are:

Sustainably Manufactured

We only use eco-friendly materials that are sustainably manufactured

Vegan and Cruelty-Free

Made from natural materials and never with animal materials or testing

Free From Nasties

Certified safe for skin and free from toxins, chemicals and fragrances.

How They Work

Our period pants absorb up to 5 tampons' worth of liquid, yet they look and feel just like regular undies.

Our built-in tech works like this:

1. Top layer wicks moisture away from the surface quickly, to keep you dry

2. Our middle layers absorb your blood and lock in your flow

3. The bottom layer pushes liquid back up and keeps you leak-free

It's simple. Just wear, wash and reuse.

Blood, Sweat, Whatever.

Three layers of fabric absorbing liquid showing how period pants work

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Customer Reviews

Based on 18 reviews
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(15)
17%
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L
Lisa Duguay (Steep Falls, US)
Flow: Super Heavy
Products used: FLUX Undies, obvs!
I love these !!

these are the best period undies!! I have been using flux brand for at least 3 year I have extremely heavy flows and tampons hurt me switched to these no more pain no leaks...just perfect

J
Julie
Flow: Heavy
Products used: FLUX Undies, obvs!
Love these!

These work great! Highly recommend!

M
M. (Bury St Edmunds, GB)
Flow: Super Heavy, Heavy
Products used: FLUX Undies, obvs!, Disposable pads
Very happy!

They are ideal for horse riding. Very comfortable.

K
KC (Mayfair, GB)
Flow: Heavy, Moderate
Products used: Disposable pads
Great!

Very happy with the undies so far! Comfortable, no leaks (even at night!) and eco friendly! Highly recommend 👍

M
Mom, Indiana, USA (Lafayette, US)
Flow: Super Heavy, Heavy, Moderate, Light
Products used: FLUX Undies, obvs!
Oh to have had these 45 years ago.

I adopted my children when I was 50. Couldn't imagine my daughter beginning her period so much earlier than I did back in the mists of time, and I hadn't thought about possibilities that may exist today. My daughter has CP and trying to balance and change pads and all the rest was very difficult for her. These flux panties have made life so unbelievably helpful to her - and me! They wash and dry beautifully and I've sung their praises to friends and complete strangers alike.
Wonderful.

A
Alex F. (Taunton, GB)
Flow: Moderate
Products used: FLUX Undies, obvs!, Cloth pads, Menstrual cup
I wish I had that before

Comfortable, stylish and absorbent. I wore that during an entire day out and the relief of not having to worry for leaks and the uncomfortable sensation of the pad displacing was so great. I put on a moon cup just to be extra cautious, but considering my average cycle it wasn't necessary. I'm planning to buy more so to use them during the all duration of my period. I wish I could have them when before, especially when I was constantly travelling.