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Heavy
HEAVY
FLOW
Front-facing view of model wearing WUKA Stretch Seamless High Waist Period Pants for heavy flow, showcasing full body fit and high waist design in black.
  • Heavy
    HEAVY
    FLOW
    Front-facing view of model wearing WUKA Stretch Seamless High Waist Period Pants for heavy flow, showcasing full body fit and high waist design in black.
  • Heavy
    HEAVY
    FLOW
    Close-up of WUKA Stretch Seamless High Waist heavy flow period underwear highlighting the high-waisted seamless fit and logo detail.
  • Free Shipping · 100% Happy Guarantee · Try for 40 days
  • Rear view of WUKA black high-waist seamless period pants designed for heavy flow, displaying full coverage and contour fit.
  • Side profile of WUKA heavy flow Stretch Seamless High Waist period underwear showing smooth, seamless fit and high-rise waistband.
  • Hands demonstrating ultra-stretchy waistband of WUKA high waist seamless period pants for heavy flow, adaptable up to 4 sizes.
  • Isolated image of WUKA Stretch Seamless High Waist period underwear for heavy flow in black, flat lay against neutral background.
  • Informational graphic showing key benefits of WUKA Stretch Seamless Period Pants: Super-fast absorption, 12-hour leak-proof protection, and stretch fit up to 4 sizes.
  • Close-up lifestyle shot of WUKA high-waist seamless heavy flow period pants worn by model lying down, showcasing comfort and body-hugging fit.
  • Front-facing view of model wearing WUKA Stretch Seamless High Waist Period Pants for heavy flow, showcasing full body fit and high waist design in black.
  • Close-up of WUKA Stretch Seamless High Waist heavy flow period underwear highlighting the high-waisted seamless fit and logo detail.
  • Rear view of WUKA black high-waist seamless period pants designed for heavy flow, displaying full coverage and contour fit.
  • Side profile of WUKA heavy flow Stretch Seamless High Waist period underwear showing smooth, seamless fit and high-rise waistband.
  • Hands demonstrating ultra-stretchy waistband of WUKA high waist seamless period pants for heavy flow, adaptable up to 4 sizes.
  • Isolated image of WUKA Stretch Seamless High Waist period underwear for heavy flow in black, flat lay against neutral background.
  • Informational graphic showing key benefits of WUKA Stretch Seamless Period Pants: Super-fast absorption, 12-hour leak-proof protection, and stretch fit up to 4 sizes.
  • Close-up lifestyle shot of WUKA high-waist seamless heavy flow period pants worn by model lying down, showcasing comfort and body-hugging fit.
WUKA Stretch Seamless High Waist Heavy
Stretch™ Period PantsSeamless High Waist
689 kr
4.7

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.
Size
Pack Size
Fits 4 Sizes
Fits 4 Sizes
Leakproof & Breathable
Leakproof & Breathable
Reusable 2 Years
Reusable 2 Years
Seamless No VPL
Seamless No VPL
Mid Height Gusset
Mid Height Gusset

WHY YOU’LL LOVE IT

WUKA Stretch™ Seamless Period Pants are the world’s first multi-size, full brief period pants. Made with innovative Stretch™ Technology, they flex to fit your body across sizes while giving you reliable, leak-proof protection on heavy flow days. Comfortable, body-hugging, and VPL-free — they’re designed to move with you.

HOW IT WORKS

Heavy Flow absorbency holds 20ml+ of period blood — around 4 tampons’ worth or 3 pads. The built-in fast absorbing gusset provides full coverage and leak-proof protection for up to 12 hours of wear. Seamless construction ensures a smooth fit under clothing, while breathable, hypoallergenic fabric keeps you fresh and dry all day.

BEST FOR

Heavy flow days, overnight wear, postpartum recovery, or times when your body is bloated or changing. Perfect for when you need reliable, secure protection without pads or tampons.

GOOD TO KNOW

Wash before first wear and always use a delicate wash cycle or mesh laundry bag. Reusable for up to 2 years, saving hundreds of 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: 80% Polyamide, 20% Elastane
Internal Fabrics: 80% Polyester, 20% Polyamide, TPU
95% Cotton, 5% Elastane
92% Polyester, 8% Elastane

FAQs: Stretch Seamless Collection

WUKA Stretch pants celebrate every body. One pair stretches to fit up to four sizes, adapting to your unique shape and even during bloating, so you always get a secure, comfortable fit and a more sustainable period.

How much period blood do Super Heavy Pants Hold?
Stretch™ Period Pants For Super Heavy Flow absorb 60ml of blood - the equivalent of 12 regular tampons and 8 pads.
Will switching to WUKA save me money?
Yes! Switching to WUKA is definitely a cheaper alternative to monthly usage of pads and tampons. WUKA period pants were the first in the world to completely replace pads and tampons- meaning even on your heaviest flow day you can be worry-free with zero leaks and odours thanks to our fast absorbing, quick drying underwear.
Are these period pants suitable for people with fibroids, PCOS, endometriosis or adenomyosis?
Yes, in fact these underwear were designed with you in mind. We understand how debilitating these conditions are and how super heavy flow requires additional protection. These pants will hopefully provide you with additional comfort and confidence on the heaviest days.
I've just had a baby, can I wear WUKA Stretch period pants?
Perfect for new mothers, WUKA Stretch was designed for you- super soft, comfy and designed to adjust to your body as it changes post pregnancy. The seamless design is gentle and sensitive to skin.
What is Stretch Technology?
In true taboo-breaking WUKA style, Stretch™ features our new patented Stretch™ technology— a meticulously designed suspended gusset is built in to each pair of underwear, engineered to retain its stretch, expand or contract depending on your unique shape. Figure flattering with a completely seamless construction, you’ll find no VPL’s here.
What is CoolMax Technology?
CoolMax™ Absorbent Technology fabric is used features in the top two layers gusset offering faster absorption for less chance of leaks and odours as well as faster-drying time post washing.
How do I care for my WUKA period pants?
Please wash these pants before wearing for the first time. Our WUKA Stretch period pants require a cold wash only. If your machine doesn’t have this setting, hand washing is your best alternative. We recommend treating your period pants as delicates. Using our mesh laundry bag will help to protect the fabric and prolong the life of your underwear.
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 very 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 251 reviews
82%
(205)
10%
(25)
5%
(12)
3%
(7)
1%
(2)
L
Laura
Really comfy and working

Really comfy and working well!

K
Kayleigh A.
So comfy, the stretch is perfect for bloated days

So comfy, the stretch is perfect for bloated days. Easy to care for and the wet bag is so handy for storing when rinsed out after being worn.

A
Anonymous
No night time leak

I bought these to sleep in when i am on my period as i often leak during the night during heavy flow. I was nervous about using the boxers but I was pleasantly surprised that I didn’t leak during the night.

123