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Heavy
HEAVY
FLOW
Model wearing WUKA Ultimate™ Bikini period pants for heavy flow – full-length front angle showing high-leg cut and comfort waistband.
  • Heavy
    HEAVY
    FLOW
    Model wearing WUKA Ultimate™ Bikini period pants for heavy flow – full-length front angle showing high-leg cut and comfort waistband.
  • Heavy
    HEAVY
    FLOW
    Close-up of WUKA Ultimate™ Bikini heavy flow period pants – smooth black organic cotton with signature red WUKA tag.
  • Free Shipping · 100% Happy Guarantee · Try for 40 days (free refunds)
  • Alternative side view of WUKA Ultimate™ Bikini – close-up of high-leg design and breathable organic cotton.
  • Detail shot of WUKA Ultimate™ Bikini for heavy periods – close-up of red WUKA Organic label and seam finish.
  • WUKA Ultimate™ Bikini period pants features – 12-hour leak-proof protection, fast absorption, and GOTS-certified organic cotton.
  • Confident model wearing WUKA Ultimate™ Bikini heavy flow period underwear outdoors – sustainable comfort and body positivity.
  • Model wearing WUKA Ultimate™ Bikini period pants for heavy flow – full-length front angle showing high-leg cut and comfort waistband.
  • Close-up of WUKA Ultimate™ Bikini heavy flow period pants – smooth black organic cotton with signature red WUKA tag.
  • Alternative side view of WUKA Ultimate™ Bikini – close-up of high-leg design and breathable organic cotton.
  • Detail shot of WUKA Ultimate™ Bikini for heavy periods – close-up of red WUKA Organic label and seam finish.
  • WUKA Ultimate™ Bikini period pants features – 12-hour leak-proof protection, fast absorption, and GOTS-certified organic cotton.
  • Confident model wearing WUKA Ultimate™ Bikini heavy flow period underwear outdoors – sustainable comfort and body positivity.
WUKA Ultimate™ Bikini - Heavy
Ultimate™ Period PantsBikini Brief
€26,95
4.5

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
Cotton Comfort
Cotton Comfort
Leakproof & Breathable
Leakproof & Breathable
Reusable 2 Years
Reusable 2 Years
Mid Height Gusset
Mid Height Gusset

WHY YOU’LL LOVE IT

WUKA Ultimate™ Bikini Heavy Flow Pants are your complete tampon and pad replacement. With a flattering bikini cut and high-leg style, they look and feel just like your favourite underwear while giving you reliable period protection day and night.

HOW IT WORKS

Each pair absorbs 20ml+ of period blood or light leaks - about 4 tampons’ worth or 3 pads. Built-in leak-proof layers lock in flow and odour, while soft organic cotton keeps you comfortable and fresh for up to 12 hours of wear.

BEST FOR

Heavy flow days, overnight wear, or whenever you want extra coverage with a flattering bikini fit. Perfect for school, work, travel, or relaxing at home.

GOOD TO KNOW

Made from GOTS-certified organic cotton, grown without chemical pesticides, fertilisers, or GM seeds. Wash before first wear. Each pair is reusable for up to 2 years, saving hundreds of disposables from landfill. Sustainable, breathable, and designed 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 : 95% organic cotton. 5% elastane Middle: 95% cotton, 5% elastane 80% polyester,20% elastane Breathable TPU
Inner: 95% organic cotton, 5% elastane

FAQ: Ultimate™ Bikini

Bikini-cut period pants in soft organic cotton for heavy flow—comfortable, breathable and protective for up to 12 hours.

How much do the Ultimate™ Bikini Heavy pants hold?
Each pair absorbs 20ml+ (about 4 tampons or 3 pads), ideal for heavy flow days and light leaks.
Do they fully replace pads and tampons?
Yes—on heavy flow days they’re designed to replace pads and tampons. If your flow is very heavy, change sooner or choose a higher-absorbency style.
What’s the fit like and are they comfortable day and night?
A flattering bikini cut with a high-leg shape made from soft, breathable organic cotton that feels like your favourite underwear.
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, as everyone’s flow is different.
How do I wash and care for them?
Wash before first wear. After use, rinse in cold water until it runs clear, then machine wash at 40°C without fabric conditioner. Air dry only; 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’re reusable for up to 2 years. Most people find 5–7 pairs work well for a full cycle; build your rotation with single, 3-pack or 5-pack options.

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Customer Reviews

Based on 4 reviews
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S
Samantha B.

WUKA Ultimate™ Bikini - Heavy

A
A N.C.
Having sizes issues

Trying to get a set of these to fit my daughter. Followed the size chart but they were too big so returned for the next size down and they’re still too big! Can’t afford to keep paying to send them back (recorded delivery as a set is so expensive) so not sure where I’ll go from here. Like the concept, as does my daughter, but this is becoming costly with no reward!

R
Rachel C.
Game changer for peri menopause

Ahh, the period menopause period roulette, scant or tsunami, 6 week, 2 week gap....who knows ?! Wuka are a real game changer . No worrying about leaks, or long train journeys and changing. Waterproof spares bag is excellent quality too. Brilliant products.

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