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Heavy
HEAVY
FLOW
Front view of model wearing WUKA Ultimate™ Midi Brief - Heavy flow period underwear in black, offering full coverage and leak protection.

Ultimate™ Period PantsMidi Brief

£24.99
4.9
≈50p per wear Pack price ÷ (pairs in pack × 50 wears)

Size Chart

 

ULTIMATE, PERFORM, LACE, RE-PURPOSE & BASICS PERIOD PANTS

SIZE
UK
EU
USA
XXS 4-6 30-32 0-1
XS 6-8 32-34 1-2
S 8-10 34-36 2-4 
M 10-12 38-40 6-8
L 12-14 42-44 10-12
XL 14-16 44-46 12-14
2XL 16-18 46-48 14-16
3XL 18-20 48-50 16-18
4XL 20-22 50-52 18-20
5XL 22-24 52-54 20-22
6XL 24-26 54-56 22-24

 

Styles: High Waist, Midi Brief, Bikini, Hipster

 

How to Measure Your Hip Size
Ultimate period underwear size chart showing how to measure chest, underbust, waist, hips, and leg opening for the perfect WUKA fit – get your size right first time for all-day leak-free comfort
WUKA TIP: No tape measure? 
You can measure yourself with a belt or dressing gown cord and a 30cm ruler! Tie the belt around your hips, place a piece of tape or pinch where it reaches, then lay flat and carefully use the ruler to measure the length.

Choose options

Medium
Heavy
Super Heavy
Choose Size
Pack Size
Tencel Fabric
Tencel Fabric
Leakproof & Breathable
Leakproof & Breathable
Reusable 2 Years
Reusable 2 Years
Midi Style
Midi Style
Mid Height Gusset
Mid Height Gusset

WHY YOU’LL LOVE IT

The WUKA Ultimate™ Midi Brief Heavy Flow is your complete tampon and pad replacement. Made with luxurious Tencel™ fabric, it combines comfort with leak-proof protection. Soft, breathable, and kind to skin — it feels just like your favourite underwear but works harder when you need it most.

HOW IT WORKS

Designed with a super absorbent hi-tech gusset and moisture barrier, these pants hold up to 20ml — that’s around 4 tampons or 3 pads.

BEST FOR

Heavy periods, moderate bladder leaks, or when you want reliable protection you can trust day or night. Perfect for everyday wear with full coverage and comfort.

GOOD TO KNOW

  • Luxurious Tencel™ Modal — fabric made in Austria.
  • Midi Brief style — offers great coverage without bulkiness.
  • Reusable — Wear, Wash, Reuse. Each pair saves 200+ disposables from landfill.
Shipping

UK orders usually arrive within 3–5 working days (Express options available), and international shipping is fully tracked from just £5 – £10 via Royal Mail. For our EU customers, we also collect VAT upfront to avoid any surprise fees on delivery.

If it’s your first pair, you’re protected by our 100% Satisfaction Guarantee — try one on, and if it’s not the right fit, you can return or exchange within 40 days. All other items must be unworn and in their original packaging. Once we receive your return, refunds are processed within 10 working days.

See our Shipping Cost and Returns & Refund Policy.

Wash and Care

Rinse, Wash at 40°, air dry inside out. Tested to 54 washes.

Composition

Outer: 91% TENCEL Modal, 9% Elastane
Middle: 88% Polyester, 12% Elastane, TPU
Inner: 91% TENCEL Modal, 9% Elastane

FAQ: Ultimate™ Midi Brief - Heavy

Midi brief period pants in soft, sustainable Tencel Modal for heavy flow. Breathable, comfy and leak-locking for up to 12 hours of protection.

How much do the Ultimate™ Midi Brief Heavy pants hold?
They hold 20 ml or more of flow, about 4 tampons or 3 pads, which is ideal for heavy period days and light leaks.
Do they fully replace pads and tampons on heavy flow days?
Yes, on heavy flow days they are designed to replace pads and tampons. If your flow is very heavy, change sooner or consider a higher absorbency style.
What are they made from and how do they feel against skin?
They are made from breathable Tencel Modal that feels soft and smooth, with a built-in absorbent gusset and moisture barrier that lock in leaks and help control odour.
Can I wear them for up to 12 hours or overnight?
They provide up to 12 hours of protection. Suitable for daytime or overnight on heavy flow, change sooner if you start to feel wet since everyone’s flow is different.
How do I wash and care for them?
Wash before first wear. After use, rinse in cold water until clear, then machine wash at 40°C without fabric conditioner and air dry. Do not tumble dry or soak for long periods.
How long will they last and how many pairs do I need?
With proper care they are reusable for up to 2 years. Most people find 5 to 7 pairs work well for a full cycle.
2024 Health & Wellbeing Awards Gold Winner Badge – recognising WUKA for excellence in health and sustainable period care
Beauty Shortlist Mama & Baby Awards 2024 Winner Badge – celebrating WUKA’s award-winning products for expecting and new mums
Our Stretch Super Heavy Period Pants take home the silver-award at the Green Parent Natural Beauty Awards 2025 for best menstrual care product
WUKA Perform Period Swimsuit wins best value cross-training kit at the Women's Running Awards 2023
Our High Waist Black Seamless Stretch – Super Heavy Flow period-proof underwear wins best period pants at the Beauty Shortlist Wellbeing Awards 2025
WUKA were finalists at the Pure Beauty Global Awards 2025
We won Gen M Award Winner - Breakthrough Partner for our seamless DryTech™ Incontinence light leaks underwear
The WUKA Postpartum Stretch™ set has been voted Best Postpartum Wellness Product for 2025 by The Positive Birth company

You may also like

  • 5 stars: 209 (93%)
  • 4 stars: 14 (6%)
  • 3 stars: 2 (1%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
J
Julie R.
Excellent

These are very high quality period pants. My daughter has used a few different brands, but these she finds to be the best.

D
Dionne S.
Comfortable and secure

Comfortable and the most secure safe feeling

A
Aims
Ultimate Midi Brief - comfortable fit, lovely quality

Ultimate Midi Brief - I’m a size 14 and purchased these in a size Large. I generally like things that cover up my stomach but was pleasantly surprised by these! Really lovely quality and comfortable fit, the only negative for me is that the crotch is too large and scrunches up. Love the mesh, makes them feel a lot nicer compared to some period pants.

L
Lynsey F.
My daughter found these to be her favourite

My daughter found these to be her favourite. They are really soft and this style has good coverage of her bum that she likes.

M
Michelle G.
Best on the Market

Daughter is Autistic and will only use this brand due to the comfort and the assurance it won’t leak.

C
Catherine C.
Brilliant

Brilliant item. Really comfy and make you feel well protected. Definitely the best I have tried

M
Moomin
Amazing product!

Such a brilliant product! Completely leak proof and incredibly comfortable. Was very sceptical but they definitely deserve 5 stars!

C
Claire L.
Amazing!

I have been using reusable pads for a while now, and decided to try Wuka pants. I am amazed at how comfortable they are. I would definitely recommend to anyone thinking about making the switch, you won't regret it!

L
Lesley
Period swim briefs

My granddaughter really struggled when she started her periods last year, and the period pants have made everything so much easier for her, especially at school. First time using the swimwear and it was so lovely to see how confident she was in the water. She wore them in the pool, in the sea and was able to join in with us on a snorkeling trip. Your products are so good for young girls starting out on their period journey, wish they'd been around when I was younger! I recommend them to everyone who asks!

K
K
De bedste!! ⭐️⭐️⭐️⭐️⭐️

Går aldrig tilbage bind/tamponer. Selv min datter på 12 bruger nu menstruationstrusser istedet for bind.

E
Emma L.
Eula pants

So comfortable and no leak through the clothes! I’m impressed.

N
Nifla Z.
So comfortable!

This is my first time using period panties and honestly at first I was scared. But when I started to use it honestly was so shocked! It was so comfortable and I never felt wet! Honestly I would recommend this. I am now going to try fully switch, so will buy more soon.

L
LIZ D.
Great service

My teenage daughter is a complete convert now and has enough pairs to last the whole period, so I needed to buy more washbags to keep them all tidy. She loves her WUKA's, especially for playing rugby, but as a fidgety sleeper they're extra secure at night which means less accidents and sheet changing for me!
Order was processed and delivered very promptly as usual.

B
Bethan B.
First time user

Decided to try period pants after years of using sanitary towels. These are super comfy! Very pleased.

K
Katie R.
Soooo comfortable

These are really great, they’re so comfortable and super secure. I felt confident from the moment I started wearing them. They don’t feel bulky and don’t irritate.

A
Annie D.
The Best

Very comfortable and I feel confident I won’t have any leaks (I even have white bedding when on my period now) Made the switch a few years ago and just started replacing some of my original WUKA pants. Highly recommend.

L
Lyn F.
No 10 star rating available!

Superb quality pants. They work so well - it’s taken me many years to decide to use period pants and honestly, I should have tried them a long time ago! Fearful of leaking though I stuck to tampons - but NOT ANY MORE! Found WUKA pants and they’re fabulous. The company is superb also - excellent customer service along with everything else. I simply cannot fault this company, their ethos or their products.

f
francess C.
Just start using it seems amazing

I will follow up on my review after few months of wearing it. It seems amazing so for easy to wash and comfortable compared to the others I have use. It would be nice it it comes in other colours like dark brown etc

A
Alex A.
Amazing

This is my second time purchasing these and they're as good as ever! I'm slowly building up my collection of period underwear to fully transition away from single use and I can't fault these! Comfortable, leak proof and sleep proof (heavy cycle)

K
Karl B.
Wuka midi heavy

2nd day of use and very pleased, comfortable and working as hoped, now feel confident to start my daughter on these.

I
Izzi G.
Life Changing

These period pants are honestly the most comfy things i’ve ever worn. I’ve been unhappy with tampons for ages but didn’t know what other options there were. I have 6 pairs of period pants now and i will never go back to tampons. They are so convenient, i can wear one pair for 12 hours on my heaviest days, which as a teacher is ideal as i never used to get time to change my tampons and i was always worrying about leaks.

A
A.G.
So good I bought 4 sets!

I bought 3 x heavy flow in these last year and mainly wore them at night because I was scared to trust them out and about in case I leaked. Over time I wore them round the house and then braved them out to work at a hospital shift, but with a tampon, just because I would be out of the house for 15 hours and they say to wear up to 12 hours. My periods can be so heavy that I could leak through a super plus tampon and a sanitary towel within 2-5 hours. With WUKA I have never leaked through them and now own the super heavy, heavy and medium flow. I recommend these to my friends but most of them are on mini pill so don’t bleed. When my daughter starts her periods I am relieved she will be able to wear these, I remember the countless leaking through clothes incidents in my youth and know it will take a lot of period related anxiety away that young girls shouldn’t have to worry about. My only criticism is that inside the knickers in my first set the white writing (label) has washed off so I think I will be waving them all around searching my drawers trying to guess which flow they all are in the future!

L
Luong H.
Great

Out of 3 brands this is number 1 of my briefs, feels Comfy and secure. Tend to use these after my heavy days (I use high waist for them) or if I want something more discreet than high waist . Definitely recommend

Hello,
We appreciate your feedback and recommendation! It's great to know that our briefs are your number one choice and provide comfort and security.

If you ever have more feedback or need assistance, don't hesitate to reach out. We're here to help!

E
Emily F.
Love at first wear

I bought size L and fell in love with them the first time I wore them! So comfortable, no leaks and didn’t feel wet. I bought 3 more pairs!!

C
Clare G.
Fantastic! My daughters, including a very sensory Autistic child, love them!

I so wish we had these when I was a teen...having heavy periods as a teen growing up was no fun, especially at school. Now my girls dont have to endure the same difficulties and issues I had........I cannot believe how comfy they are and how safe it feels, once you get used to them! A real bonus they are better for the environment and although a little pricey, they are definitely worth the investment and will pay for themselves eventually.

R
R.S.
Love these

Got a pair to try: first day of period went on a five mile walk, no leakage. Washed them, wore them for nine hours next day, no leakage again, and could have worn them longer both days. Getting some more pairs right now 😍

M
Marianne
Well worth the initial cost

I spent a small fortune on 12 pairs of these knickers for my 12 year old daughter. They are amazing and completely protect her on her heaviest days (she wears them with pads in place). The initial cost is nothing compared to the amount I’ve shelled out replacing underwear, clothing and bedding when she’s had an unexpected visit from “the red fairy”

Y
Yolande B.
Excellent

Very comfortable and no leaks.

R
R.R.
Colour coding?

I love your underwear but have a suggestion. I purchased all the different flow options and although it’s printed in white inside wether it’s light/medium/heavy this fades with washing so it becomes a guessing game. Could you colour code your logo on the waist???

C
C.
Great for sleeping

These are comfortable and very absorbent. They are really good for sleeping in.

S
S.
They really work!

These are great, I feel clean and comfortable wearing them. They run a tad small so definitely size up if you are unsure, I wish I had. Customer service is excellent, too, so I am happy to support this company. I will be recommending WUKA to friends/family and shopping here exclusively in future!