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WUKA Lunafly Competition Bikini swim kit — period bikini, swim top, cap, towel and bags

Competition Period SwimwearLunafly™ Bikini & Top Kit

Sale price  £60.42 Regular price  £81.62 Saving 25% 25% Off

"Swim kit you can wear on your period, no tampon. Designed to keep you in the pool." 3x Olympian and 2x Commonwealth Champion, Hannah Miley MBE

Size Chart

 

SWIM SIZE GUIDE

 

SWIMSUIT 

SIZE
UK
BUST
WAIST
HIPS
XXS 4 70 55 80
XS 6 75 60 85
S 8 80 65 90
M 10 85 70 95
L 12 90 75 100
XL 14 95 80 105
2XL 16 100 85 110

 

 

SWIM BRIEF

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

 

SWIM TOPS

CUPS
Band A B C D DD E F
28 No No No
30 XS XS XS XS S
32 XS S S S S
34 XS S S M M M
36 S M M M L L
38 M L L L XL XL
40 L XL XL XL XXL
42 XXL XXL XXL

 

How to Measure Your Hip Size

Period swimwear size chart showing how to measure chest, underbust, waist, hips, and leg opening to find the perfect WUKA fit. Get the right size first time for leakproof, comfortable, and secure menstrual swimwear.

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

Swim Legsuit
Swim Racerback
Swim Tie-Back
Swim Bikini
Size
WUKA Lunafly Competition Top (Size)
Club Compression Fit
Club Compression Fit
High Visibility
High Visibility
Heavy Absorbency
Heavy Absorbency
UV Resistant
UV Resistant
Why you'll love it

WHY YOU'LL LOVE IT
The full two-piece. Leakproof Lunafly Competition Bikini bottoms, the matching Lunafly Swim Top for a co-ordinated set, plus a swim cap, quick-drying microfibre towel for poolside, wet bag and wash bag. Everything for the pool in one box, designed for swimmers who prefer separates. Elite Athlete Approved. 3x Olympian and 2x Commonwealth Champion, Hannah Miley MBE.

WHAT'S IN THE KIT
Lunafly Competition Bikini bottoms, Lunafly Swim Top, swim cap, quick-drying microfibre towel (40 x 80cm, black), wet bag, mesh wash bag. XXS - L.

BEST FOR
Swimmers who prefer two-piece kit, easier changing-room access, club training where separates are allowed, summer pool days, growth-spurt years when one-pieces don't fit any more.

GOOD TO KNOW
Six items, one click, the full set. Chlorine-resistant recycled nylon throughout. Two-season lifespan. The microfibre towel packs small and dries fast, ideal for poolside between sets. The bottoms hold 20ml of heavy flow, the same as 4 tampons or 3 regular pads, no tampon needed. The Top is the matching compression top, not period-protective on its own, the leakproof layer lives in the bottoms.

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

Main Body Outer: 80% Recycled Polyamide, 20% Elastane with a durable hydrodynamic water repellent treatment.
Gusset Core: Integrated multi-layer performance blend (Polyester, Polyamide, and breathable waterproof TPU layer) engineered for rapid blood isolation underwater.
Linings: Soft, breathable, fast drying chlorine resistant mesh.

How it actually works underwater

Leakproof, heavy flow absorbency. No tampon.

  • 1Water-repellent shell beads pool water off, so the suit stays light through every length.
  • 2Leakproof gusset traps period blood directly, up to four hours on a heavy day.
  • 3Tampon-free swimming, training and competing, junior to adult.
Co-designed with an Olympian
"Too many girls quit the sport they love the year their period starts. They shouldn't have to choose."

Hannah swam for Team GB at three Olympics. She co-designed the range so it performs whether you are 11 in your first club season or swimming Masters at 32.

Elite Athlete Approved. 3x Olympian and 2x Commonwealth Champion, Hannah Miley MBE.
From the training pool to the gala

Swim families already trust WUKA

The Lunafly Competition range is new, but WUKA period swimwear is not. Here is what club and competitive swimmers, and their parents, already say.

★★★★★
A must have for young swimmers
"She swims competitively and these are perfect for wearing under her training costume. It means there's no interruption with missing training sessions or galas. An absolute godsend."
Swim Mama
Verified WUKA swim review
Competitive
★★★★★
Another perfect product
"My daughter is a competitive swimmer and uses the swim briefs under her training suit. They do not show through and work perfectly. No leakage at all."
Gwen T.
Verified WUKA swim review
Competitive
★★★★★
Swim daughter
"I bought these for my competitive swim daughter, age 12. She can't keep missing training so we gave it a go. Wow was her response after first wear. Felt great, no leaks and rinsed out easily."
A WUKA parent
Verified WUKA swim review
Competitive
★★★★★
Functional and stylish
"My daughter swims competitively and adores these, it means no more missed training sessions. Super discreet, no one would know they are period-proof swimwear."
Jade A.
Verified WUKA swim review
Competitive
★★★★★
Buy these now
"They give her the confidence to go to training lessons or swimming with friends. The longest she wore them was 2 hours on day 2 of her period, so quite heavy, and no leakages at all."
Jacqui M.
Verified WUKA swim review
Heavy day
★★★★★
A lifesaver on holiday
"An absolute lifesaver on holiday. I felt so comfortable and relieved that my period didn't stop me from enjoying the pool. Being able to swim and enjoy time with my family was priceless."
Victoria C.
Verified WUKA swim review
Adult swimmer

Reviews shown are verified customer reviews of WUKA's existing period-swimwear range, quoted as published and trimmed only for length. The Lunafly Competition range is new, its own reviews will appear here once swimmers have raced in it.

What's in the Lunafly Bikini & Top Kit?

Six items: the Lunafly Competition Bikini bottoms with the leakproof gusset (pick your size), the matching Lunafly Swim Top in the same Electric Neon colourway, a Lunafly swim cap, a 40 x 80cm quick-drying microfibre towel in black, a two-pocket wet bag for soaked kit, and a mesh wash bag for the machine.

Do I pick one size for both the bottoms and the top?

Yes. Pick one size at checkout (junior XXS through to adult L) and both bottoms and top come in that size.

Where is the period protection?

In the bottoms. The Lunafly Competition Bikini bottoms have the leakproof gusset and water-repellent shell. The Top is a matching compression piece, not period-protective on its own. Pair the bottoms with the Top for a co-ordinated set, or wear the bottoms with any compression top you already own.

Is the bikini set FINA-approved for competition?

No. The Lunafly Competition Bikini is built for club training and junior competitions, not a FINA-approved tech suit. Check your governing body's rules before senior or elite-level meets.

Is the kit cheaper than buying everything separately?

The kit is priced at full retail across the six items, so you pay the same as buying each one alone. The value is in the convenience and the matching set arriving in one box.

Can I wash everything in the kit together?

Yes. Pop the bikini bottoms and Top in the mesh wash bag and machine wash everything cold on a gentle cycle, though hand washing will preserve them longer. Air dry. No fabric softener, eco laundry detergents only.

How long does the bikini set last?

About two seasons of regular club training, looked after well. Chlorine-resistant recycled nylon throughout, reinforced gusset seams on the bottoms, dye-locked neon print. Elite Athlete Approved. 3x Olympian and 2x Commonwealth Champion, Hannah Miley MBE.

Can I return part of the kit?

The kit returns as a whole. Unworn bottoms with the sanitary strip attached can be returned or exchanged within 40 days. Contact customer support for a size exchange.

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