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Heavy
HEAVY
FLOW
Front view of a model wearing WUKA Stretch Cotton Midi Brief for heavy flow in black, designed for 12-hour leak protection and maximum comfort.
  • Heavy
    HEAVY
    FLOW
    Front view of a model wearing WUKA Stretch Cotton Midi Brief for heavy flow in black, designed for 12-hour leak protection and maximum comfort.
  • Heavy
    HEAVY
    FLOW
    Close-up front image of WUKA Stretch Cotton Midi Brief heavy flow underwear, showcasing high-waisted fit and secure leak-proof design.
  • Free Shipping · 100% Happy Guarantee · Try for 40 days (free refunds)
  • Back view of WUKA Stretch Cotton Midi Brief heavy flow period pants, offering full coverage and reliable protection for heavy menstruation days.
  • Side view of the WUKA Stretch Cotton Midi Brief designed for heavy period flow, featuring soft cotton fabric and stretchable waistband.
  • Detailed image of the WUKA Stretch Cotton Midi Brief heavy flow showing smooth seams and soft cotton finish for all-day comfort.
  • Product-only view of WUKA Stretch Cotton Midi Brief for heavy flow in black, designed with super absorbent layers and breathable cotton.
  • Infographic showing key benefits of WUKA Stretch Cotton Midi Brief heavy flow – 12-hour leak protection, fast absorption, and multi-size stretch.
  • Confident model wearing WUKA Stretch Cotton Midi Brief heavy flow underwear in black, perfect for secure and comfortable period protection.
  • Front view of a model wearing WUKA Stretch Cotton Midi Brief for heavy flow in black, designed for 12-hour leak protection and maximum comfort.
  • Close-up front image of WUKA Stretch Cotton Midi Brief heavy flow underwear, showcasing high-waisted fit and secure leak-proof design.
  • Back view of WUKA Stretch Cotton Midi Brief heavy flow period pants, offering full coverage and reliable protection for heavy menstruation days.
  • Side view of the WUKA Stretch Cotton Midi Brief designed for heavy period flow, featuring soft cotton fabric and stretchable waistband.
  • Detailed image of the WUKA Stretch Cotton Midi Brief heavy flow showing smooth seams and soft cotton finish for all-day comfort.
  • Product-only view of WUKA Stretch Cotton Midi Brief for heavy flow in black, designed with super absorbent layers and breathable cotton.
  • Infographic showing key benefits of WUKA Stretch Cotton Midi Brief heavy flow – 12-hour leak protection, fast absorption, and multi-size stretch.
  • Confident model wearing WUKA Stretch Cotton Midi Brief heavy flow underwear in black, perfect for secure and comfortable period protection.
WUKA Stretch Cotton Midi Brief Heavy
Stretch™ Period PantsCotton Midi Brief
€23,95
4.7

Size Chart

 

STRETCH & DRYTECH SIZE GUIDE

Fits 4 sizes in one underwear for a perfect fit first time!

SIZES

Size 1

Size 2

Size 3*

Universal

XS, S, M, L

L, XL, 2XL, 3XL

3XL, 4XL, 5XL,

UK

6,8,10,12,14

14,16,18,20

20, 22, 24,26

EU

34,36,38,40,42

42, 44,46,48

48, 50, 52,54

USA

2,4,6,8,10

10, 12, 14,16

16,18,20,22

Hip (cm)

85 - 105

105 - 120

120 - 135

*Not all products are available in size 3

How to Measure Your Hip Size

Adult Stretch period underwear size chart showing how to measure chest, underbust, waist, hips, and leg opening for a perfect WUKA fit. Find your ideal size first time with stretch-fit leakproof 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 Size
Pack Size
Fits 4 Sizes
Fits 4 Sizes
Cotton Comfort
Cotton Comfort
Reusable 2 Years
Reusable 2 Years
Leakproof & Breathable
Leakproof & Breathable

WHY YOU’LL LOVE IT

WUKA Stretch™ Cotton Period Pants are the world’s first full brief made from BCI Cotton, created especially for sensitive skin. Hypoallergenic, breathable, and cloud-soft, they mould to your body with Stretch™ technology, flexing across 4 sizes to give you ultimate comfort and leak-proof protection.

HOW IT WORKS

Heavy flow absorbency holds up to 20ml of period blood — around 4 tampons’ worth or 3 pads. The built-in gusset provides full coverage, while the organic cotton fabric is gentle, breathable, and naturally kind to skin. Stretch™ technology ensures a flexible fit that adapts as your body changes, giving you freedom without irritation.

BEST FOR

Heavy flow days, sensitive skin, and those who prefer the natural softness of organic cotton. Perfect for everyday wear, post-birth recovery, or when you need long-lasting comfort and protection.

GOOD TO KNOW

  • Made from ethically sourced Cotton
  • Wear for up to 12 hours of breathable freshness
  • Wash before first wear; use a delicate cycle or mesh bag
  • Reusable for up to 2 years — saving over 200 disposables from landfill
Free Shipping

We want you to love your WUKAs. UK orders usually arrive within 2–5 working days (express options available), and international shipping is fully tracked from just £5–£10 via FedEx. 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 Fabric: 82.8% Cotton, 17.2%Elastane
Middle: 80% Polyester, 20% Polyamide,TPU
Internal Fabrics: 95% Cotton, 5% Elastane

FAQ: Stretch Cotton

WUKA Stretch Cotton pants are perfect for people who struggle to find the right size of period pants. Taking the guesswork out of sizing, one pair of WUKA stretch Cotton can stretch up to four sizes so you can say hello to a more comfortable, sustainable period. Stretch Cotton period pants are the world’s first full brief made from BCI certified Cotton.

What's BCI Cotton?
BCI stands for the Better Cotton Initiative. It is a global not-for-profit organisation on a mission to make the cotton industry more sustainable. The Better Cotton Initiative (BCI) exists to make global cotton production better for the people who produce it, better for the environment it grows in and better for the sector’s future. BCI aims to transform cotton production worldwide by developing Better Cotton as a sustainable mainstream commodity. BCI works across the cotton supply chain to promote measurable and continuing improvements. Find out more about BCI at - https://bettercotton.org/
Why choose Stretch Cotton?
Many traditional sanitary pads contain plastic and harsh chemicals that can lead to skin irritations and rashes. WUKA Cotton Stretch offers a healthier alternative by being chemical-free, promoting comfort, and reducing the risk of skin-related issues associated with menstrual products.
Caring for Stretch Cotton?
Due to the delicate nature of this unique material, we recommend washing WUKA Stretch™ Cotton in our custom designed laundry mesh bag. Elastane (a composition of our fabric) doesn’t like heat or chemicals. We recommend not tumble-drying your period pants or hanging them on a radiator – air drying is best.
How do WUKA Period Pants work?
Layers. Our many layers contribute to making sure you get a long lasting feeling of dryness and security, not having to worry about leakage, smell or infection. Every pair includes a super absorbent gusset which consists of many layers, the middle layers absorb and lock in the blood whilst working with the outer layer to ensure you stay dry through your day to day activities! Period pants look and feel like your regular underwear but they are leak-proof, which means you don't have to wear a pad, a tampon or menstrual cup when you wear them during your period.
I have really heavy periods, will I need to use any additional products?
It depends on the level of absorbency that you need. WUKA are designed to hold a certain amount of menstrual flow, as specified on our website from light flow to super heavy flow. If you have a light flow, it may be possible to wear WUKA Light flow pants without additional protection. However, if you have a heavy flow or are experiencing incontinence, we suggest wearing a heavy or super heavy flow. It's always best to carry extra pants.
How many pairs do I need?
We find that 5-7 pairs is best for most customers considering they last up to 2 years. Check out our savings on bundle cycle sets for 3 to 5 pairs.
How long will my period pants last for?
WUKA period pants can be reused for up to 2 years. For the first 40 days after you receive an order we offer a 100% satisfaction guarantee on your first pair of WUKA pants.
Do WUKA pants contain PFA's?
The simple answer is no! WUKA has been committed since day one to not use any harmful chemicals in the production of our products. All of the materials that we use are planet friendly, animal friendly and contain no added chemicals, such as silver or antibacterial treatments, stain-resistant or Perfluoroalkyl and Polyfluoroalkyl substances (PFAs or PFSAs). All WUKA are independently tested by Highstreet Textile Testing Services Ltd (HTTS) who guarantee there is zero trace of PFA's in our products.
How do I wash and dry my period pants?
After use, rinse with cold water until the water runs clear. This is best done immediately after removing. Pop your WUKA with similar, dark coloured garments and wash at 30-40ºc, inside out. Don't use fabric conditioners. Air dry your WUKA Period Pants outside on the line or indoors on an airer. Don't tumble dry it. For the Heavy Flow and the Super Heavy Flow, we advise washing inside out and giving them an extra spin. As well as this, we recommend sticking on a warm radiator to ensure complete dryness. We always advise washing pants as cold as possible. This will prolong the lifespan of your pants and also keep the absorbency as high as possible. Refrain from drying in a dryer or on a radiator (if possible) and always dry inside out. We would not suggest leaving your WUKA pants to soak for a prolonged time, this can cause the material and bonding to wear and damage quicker.

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Customer Reviews

Based on 248 reviews
81%
(202)
10%
(24)
5%
(12)
3%
(7)
1%
(3)
H
Helen J.
They definately work bt they are a tight high

They definately work bt they are a tight high fit! im n 8-10 and tight!

R
Rhian
Leak proof but not as comfy as WUKA organics

Only 3* because I've had WUKA organics for years and have loved them. I thought I'd try these. They aren't as stretchy as they say considering they're supposed to fit large too. I am a size 10/12 normally. Today I am bloated and they're uncomfortable 😣 I can feel the restriction on my stomach and very aware of them when I'm not usually with the others. stupidly bought 5 pairs and now I wish I stuck with the organics.

No leaks though, I just loved the original organic period pants, comfy, stretchy and proper cotton. Will be purchasing them again and again

A
Anonymous
Very comfortable

Very comfortable & really leak proof

123