[{"id":261378211915,"handle":"best-selling-collection","title":"Best selling products","updated_at":"2022-08-08T18:05:27+01:00","body_html":null,"published_at":"2021-06-04T13:53:54+01:00","sort_order":"best-selling","template_suffix":null,"disjunctive":false,"rules":[{"column":"variant_price","relation":"greater_than","condition":"0"}],"published_scope":"web"},{"id":261216600139,"handle":"essentials-period-pants","updated_at":"2022-08-08T15:15:40+01:00","published_at":"2021-05-17T19:57:44+01:00","sort_order":"best-selling","template_suffix":"","published_scope":"web","title":"Essentials™️ Period Pants","body_html":"\u003ch2 data-mce-fragment=\"1\" style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\n\u003cspan style=\"color: #8b072f;\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003e\u003c\/strong\u003e\u003c\/span\u003e \u003cmeta charset=\"utf-8\"\u003e\n\u003c\/h2\u003e\n\u003ch2 data-mce-fragment=\"1\" style=\"text-align: center;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eWhy Choose Our Essentials\u003cspan data-mce-fragment=\"1\"\u003e™\u003c\/span\u003e Period Pants?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eOur simple and affordable Essential period underwear is made using surplus fabric so we can pass the savings on to you!\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eIf you're looking for comfortable period pants made from super soft cotton that keep you dry and leak-free, look no further. Best for moderate flow, our Essentials line of period pants absorb up to 3 tampons' worth for up to 8 hours. Simply wear, wash and reuse.\u003c\/p\u003e"},{"id":260527554635,"handle":"heavy-flow","updated_at":"2022-08-08T18:05:27+01:00","published_at":"2021-03-05T16:13:26+00:00","sort_order":"best-selling","template_suffix":"","published_scope":"web","title":"Heavy Flow Period Pants","body_html":"\u003ch2 style=\"text-align: center;\" data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\" data-mce-fragment=\"1\"\u003eWhy Choose Our Heavy Flow Period Pants?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"color: #8b072f;\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003eOur heavy flow period pants are a complete replacement for disposable pads and tampons. If you're looking for period underwear that keeps you fresh, dry and completely leak-free, look no further. Our knickers absorb up to four tampons' worth of blood for up to 12 hours. Simply wear, wash, reuse.\u003c\/p\u003e","image":{"created_at":"2021-03-08T17:20:28+00:00","alt":null,"width":76,"height":69,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0072\/6184\/7610\/collections\/1615224027_1614988016_plad2.png?v=1615224029"}},{"id":260527456331,"handle":"newest-products","title":"New Arrivals","updated_at":"2022-08-08T18:05:27+01:00","body_html":"","published_at":"2021-03-05T16:00:51+00:00","sort_order":"created-desc","template_suffix":"","disjunctive":true,"rules":[{"column":"title","relation":"contains","condition":"Newest"},{"column":"title","relation":"not_contains","condition":"Newest"},{"column":"title","relation":"not_contains","condition":"Mix \u0026 Match"}],"published_scope":"web"},{"id":261221744715,"handle":"new-arrivals","updated_at":"2022-08-08T15:15:40+01:00","published_at":"2021-05-18T13:39:58+01:00","sort_order":"best-selling","template_suffix":"","published_scope":"web","title":"New Arrivals","body_html":""},{"id":261378179147,"handle":"new-collection","title":"New products","updated_at":"2022-08-08T18:05:27+01:00","body_html":null,"published_at":"2021-06-04T13:53:53+01:00","sort_order":"created-desc","template_suffix":null,"disjunctive":false,"rules":[{"column":"variant_price","relation":"greater_than","condition":"0"}],"published_scope":"web"},{"id":261221679179,"handle":"brief-style-period-pants","updated_at":"2022-08-08T16:10:12+01:00","published_at":"2021-05-18T13:26:01+01:00","sort_order":"best-selling","template_suffix":"","published_scope":"web","title":"Period Briefs","body_html":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"g\" data-mce-fragment=\"1\"\u003e\n\u003cdiv data-hveid=\"CAIQAA\" data-ved=\"2ahUKEwiLqrGPptPwAhUM6OAKHWNrBCYQFSgAMAF6BAgCEAA\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"tF2Cxc\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"IsZvec\" style=\"text-align: center;\" data-mce-fragment=\"1\"\u003e\n\u003ch2\u003e\u003cspan style=\"font-weight: 400;\"\u003eWhy Choose Our Brief Style Period Pants?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eOur brief style period pants are made leak-proof and quick-drying for your comfort. They’re super soft and comfy, too!\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eLooking (and feeling) just like regular underwear, the period pants in this collection are all designed with moisture wicking layers to leave you feeling dry throughout the day. They’re super-absorbent as well, with different pairs available for different levels of flow. So, whether you need something for lighter or heavier days, we’ll have it here!\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eYou won’t ever have to worry about stocking up on bulky disposable products again with our period briefs. Just think of how much money that will save you in the long run, as well as how much plastic you’ll be stopping from ending up in a landfill ‒ you’ll be saving the planet as well as your budget!\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eIf you’re worried about how these knickers will work when you wear them, you can always try them out at home for a few days to see how you get on. We’ve even got a 60 day money back guarantee if you feel that they’re not for you.\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eHave a look at the briefs we’ve got for sale here in the UK and pick out the pairs that’ll be just right for you. We’ve got styles for both day and night, so you can even sleep easy in our undies!\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"g\" data-mce-fragment=\"1\"\u003e\n\u003cdiv data-hveid=\"CAMQAA\" data-ved=\"2ahUKEwiLqrGPptPwAhUM6OAKHWNrBCYQFSgAMAJ6BAgDEAA\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"tF2Cxc\" data-mce-fragment=\"1\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e"},{"id":261221711947,"handle":"period-pants","updated_at":"2022-08-08T18:05:27+01:00","published_at":"2021-05-18T13:39:44+01:00","sort_order":"best-selling","template_suffix":"","published_scope":"web","title":"Shop All Period Pants","body_html":"\u003ch2 style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003ePeriod Pants: Why Choose FLUX Undies?\u003c\/h2\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003eWhen you choose to buy period pants from FLUX Undies, you won’t just be getting a new set of super comfy underwear to slip into whenever you feel your period coming. You’ll be getting a sustainably made, environmentally-friendly purchase that’ll even save you money in the long run. One pair of our period-proof panties is designed to be worn for up to 12 hours a day and will last for up to three years, so think of how much you’ll be giving back, both to your budget and to the world.\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003eNot only will you be reducing your waste by as much as 99.5%, but you’ll also be getting involved in our donation scheme ‒ for every pair you buy, we’ll provide a reusable period pad for a girl who needs one. We also believe in empowering the people who work with us, as well as our customers, so you can feel confident knowing your favourite pairs of period panties have come from factories with ethical working practices. Change your life, every month. \u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003eWe know that making the switch can be difficult at first, which is why we’d suggest trying your new period panties out at home before replacing your current products completely. You could be changing your life with a new set of super absorbent, fully washable period undies made by us, so why not take a look at the styles we offer and see what you think? Buy a pair or two to get you started and pass the days of your period in clean, comfortable, and completely sustainable style! Delivery across the UK and worldwide.\u003c\/div\u003e"}]
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:Body: 95% Cotton 5% ElastaneGusset: 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 schemehere
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
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.
