Essential Brief - Moderate Flow
Essential Brief - Moderate Flow
Essential Brief - Moderate Flow
Essential Brief - Moderate Flow
Essential Brief - Moderate Flow

Essential Brief - Moderate Flow

Regular price £17.95
Tax included. Shipping calculated at checkout.

FLUX Essentials™ 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 3 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 3 Tampons' Worth / 15ml
  • Wear For Up To 8 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 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. 
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.

60-Day Money Back Guarantee
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 22 reviews
Sharan C (Lambeth, GB)
Flow: Moderate
Products used: FLUX Undies, obvs!, Tampons
No Leaks

I already had some of the heavy flow pants for the first few days of my period and brought the medium for the last few days. They are comfy and I feel assured I won't leak and they're easy to clean.

Jacynthe (Aberdeen, GB)
Flow: Heavy, Moderate
Products used: FLUX Undies, obvs!, Menstrual cup
Comfortable underwear

Got the size M, it looked much bigger than I thought but fits really well. I wear it on heavy nights and I use my cup at the same time. I don’t worry about leaking on the bed at night and so far so good! I used to wear pads and the pants feel much better, dithery don’t feel bulky or sweaty like pads can be.
If you can afford a good pair like flux I’d recommend you make the investment, I think I’ll even get myself another pair.

ZOE (Manchester, GB)
Flow: Heavy, Moderate
Products used: FLUX Undies, obvs!

They are so comfy and just makes life easier and better for the environment. I dont have to worry anymore about having pads with me and I can attend my exercise classes without worrying about leaks. Highly recommend !

Colleen Moore (Dorking, GB)
Flow: Heavy, Moderate
Products used: FLUX Undies, obvs!
Comfy and worry free period undies

I am new to the world of period undies having not had a period in over 5 years due to being on the pill. I ordered 1 pair to try as I wasn't convinced on whether they would even work. I can confidently say that the Flux Briefs are comfy and totally reliable. The moderate flow undies safely covered me for 5+ hours which is impressive considering it was day 1 and I am on blood thinners. I'll be getting more for sure!

Flow: Heavy, Moderate
Products used: FLUX Undies, obvs!, Disposable pads
Super comfortable

These are very comfortable. I can’t wear them all day on the first couple days, but once my flow starts lightening toward the middle to end of my cycle, these are great. I can almost forget I’m on my period.

Meg (Reading, GB)
Flow: Heavy, Moderate
Products used: FLUX Undies, obvs!, Disposable pads
They work!

While I am a size 10 pretty much as standard, these ran a little small and I think I would have been fine with a 12 - my own fault as I’m sure the size chart recommended sizing up and my measurements are closer to their 12 range!
I use these moderate flow pants from the third day onwards, when I know I’m not bleeding super heavily.
Really easy to wash/care for, and so much more comfortable and convenient than wearing pads every single day.