Hi-Waist

£28.95
Hi-Waist - Heavy Absorbency

Wear on heavy days

HOLDS 4 TAMPONS' WORTH

  • Wear for up to 12 hours on heavier days
  • Holds four tampons' worth or 20-25ml
  • For periods, leaks & incontinence 
  • Great for day and night.
  • OEKO-Tex certified materials

Buy more + save more.

Hi-Waist

For heavy days

holds 4 tampons' worth / 20-25ml

£28.95

  • Wear for up to 12 hours on heavier days
  • Holds four tampons' worth or 20/25ml
  • For periods, leaks & incontinence 
  • Great for day and night.
  • OEKO-Tex certified materials

Buy more + save more.

Style + fit

Made with soft 'n' sustainable modal fabric on the inside, smooth nylon outside, and chic mesh panels for added style.

The super absorbent gusset means they feel like normal undies, but keep you fresh 'n' dry all day.

Fabric + care

Inner: 95% TENCEL Modal 5% Elastane, 

Outer: 92% Nylon 8% Lycra, 

Trim and sides: 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 45 reviews
84%
(38)
13%
(6)
2%
(1)
0%
(0)
0%
(0)
D
D.N.S.
Flow: Super Heavy
Products used: FLUX Undies, obvs!
Great, super comfortable , perfect for those days

I think they are amazing! Super comfy, also look very good, which may not be your first priority on those days, but definitely make you feel better, when you look in the mirror. Leak-proof. Had them on all day. Just perfect,

L
L.
Flow: Super Heavy, Heavy
Products used: FLUX Undies, obvs!
The best thing I did for my body

I’ve always had a super heavy flow to the point some days I was changing an “overnight” pad 4 times in the day. I was constantly worried about leaks and number of pads I was going through was ridiculous.
When I found Flux Undies it completely changed the way I have a period.
I’m a larger lady, so the high waisted undies are perfect for me. The new design with the waist band and cotton feel makes then so comfortable, while the mesh sides still make you feel just a little bit sexy and your most unsexiest time of the month. I’ve never had a leak problem and never had that “slightly damp” feel you sometimes have with pads. Amazing for night time too! I sleep so much better not worrying that I’m going to ruin yet another set of sheets!
I can not recommend these products enough. They really are amazing.

J
J.M.
Flow: Super Heavy, Heavy
Products used: FLUX Undies, obvs!
Don't look back

I was full of doubts when ordering first panties. I tried for over night & over day, close to 12 hours, with heavy period, washed, dried, and today I am ordering more. I will never look back for pads. Comfortable, practical and environmentally friendly. Only one advice - I read reviews with an advice to buy a size bigger. However, the size is correct.

P
P.H.
Flow: Moderate
Products used: Disposable pads
Fantastic

I bought these for myself, but my daughter wanted to try them. I have not had them back. Need to order another pair now for myself as she thinks they are fantastic.

  • 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.