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Super Heavy
SUPER HEAVY
FLOW
WUKA Stretch™ Super Heavy Flow Period Pants 2 Pack with Wet Bag – Leak-proof and ultra-absorbent reusable underwear for heavy periods and overnight protection.
  • Super Heavy
    SUPER HEAVY
    FLOW
    WUKA Stretch™ Super Heavy Flow Period Pants 2 Pack with Wet Bag – Leak-proof and ultra-absorbent reusable underwear for heavy periods and overnight protection.
  • Super Heavy
    SUPER HEAVY
    FLOW
    Female model wearing WUKA Stretch™ Super Heavy Period Brief in black, showcasing a mid-waisted fit and seamless comfort.
  • Free Shipping · 100% Happy Guarantee · Try for 40 days (free refunds)
  • Close-up of WUKA Stretch™ Super Heavy Flow Brief worn by model, highlighting leak-proof and absorbent period underwear design.
  • Rear view of WUKA Stretch™ Period Underwear in black, showing full coverage and smooth finish for sleep comfort.
  • Side view of WUKA Stretch™ Super Heavy Period Pants, designed to fit up to four sizes with high-stretch fabric.
  • Product close-up of WUKA black period pants, showing seamless front panel and logo detail.
  • Product features of WUKA Stretch™ Period Pants – Fast absorption, 12-hour leak-proof protection, and 4-size stretch technology. No pads. No tampons. Just these.
  • Lifestyle shot of model in seated position wearing WUKA Stretch™ Super Heavy Period Pants, ideal for overnight wear and maximum comfort.
  • WUKA Stretch™ Super Heavy Flow Period Pants 2 Pack with Wet Bag – Leak-proof and ultra-absorbent reusable underwear for heavy periods and overnight protection.
  • Female model wearing WUKA Stretch™ Super Heavy Period Brief in black, showcasing a mid-waisted fit and seamless comfort.
  • Close-up of WUKA Stretch™ Super Heavy Flow Brief worn by model, highlighting leak-proof and absorbent period underwear design.
  • Rear view of WUKA Stretch™ Period Underwear in black, showing full coverage and smooth finish for sleep comfort.
  • Side view of WUKA Stretch™ Super Heavy Period Pants, designed to fit up to four sizes with high-stretch fabric.
  • Product close-up of WUKA black period pants, showing seamless front panel and logo detail.
  • Product features of WUKA Stretch™ Period Pants – Fast absorption, 12-hour leak-proof protection, and 4-size stretch technology. No pads. No tampons. Just these.
  • Lifestyle shot of model in seated position wearing WUKA Stretch™ Super Heavy Period Pants, ideal for overnight wear and maximum comfort.
WUKA Adult Sleep Set Stretch™ Super Heavy 2 pack
Stretch™ Period PantsSleep Set 2 Pack
£45.42 £36.65 Saving 19%
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
Fits 4 Sizes
Fits 4 Sizes
Leakproof & Breathable
Leakproof & Breathable
Seamless No VPL
Seamless No VPL
Reusable 2 Years
Reusable 2 Years
Mid Height Gusset
Mid Height Gusset
Midi Style
Midi Style

WHY YOU’LL LOVE IT

These Stretch™ undies have you fully covered. Designed to feel like your favourite seamless underwear with built-in protection that lasts up to 12 hours. Just sleek, seamless comfort you can trust through the night.

HOW IT WORKS

A multi-layer gusset absorbs up to 60ml (about 12 tampons or 8 pads worth) with fast-wicking Coolmax tech and a waterproof layer to stop leaks in their tracks. Our signature Stretch™ fabric flexes with your body—even as your flow and bloating change through your cycle.

BEST FOR

Heavy flow days. Overnight protection. Travel, work, or anytime you’re on the go and don’t want to stress. These are the briefs that show up, so you don’t have to worry.

GOOD TO KNOW

Wash before first wear. Reusable for up to 2 years—saving around 200 disposables. Seamless and breathable. And made for real life.
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% nylon, 20% elastane
Middle: 80% polyester,20% elastane Breathable TPU
Inner: 92% polyester. 8% spandex

FAQ: Adult Sleep Set Stretch™ Super Heavy

Designed for maximum absorbency and comfort overnight, with two pairs that adapt to your body for up to 12 hours of leak-free protection.

How much blood do the Adult Sleep Set Stretch™ Super Heavy pants hold?
Each pair in the Adult Sleep Set Stretch™ Super Heavy absorbs up to 60ml of period blood, equal to 12 tampons or 8 pads.
Are they suitable for overnight and very heavy flow?
Yes, they are designed especially for overnight wear and super heavy flow days, providing up to 12 hours of leak-free comfort.
What makes the Stretch™ fabric different?
The patented Stretch™ fabric adapts to your unique body shape, expanding and contracting for a perfect fit without digging in, even while you sleep.
Do I need extra pads or tampons with these?
No, these pants are made to completely replace pads and tampons, even on your heaviest nights.
How do I wash and care for them?
Rinse in cold water after use, then machine wash at 40°C without fabric conditioner. Air dry only to maintain absorbency and prolong their life.
How long will they last and how many pairs do I need?
Each pair lasts up to 2 years. With the 2 pack, you’ll have reliable overnight protection ready for rotation, though many customers find 5–7 pairs cover a full cycle.

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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