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Medium
MEDIUM
FLOW
Teen Period Racerback Swimsuit in black designed for medium flow, offering full coverage and leak-proof protection for confident swimming during periods.

Teen Period SwimwearRacerback Swimsuit

€52,95
4.1

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/SHORTS

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 Racerback
Swim Scoopback
Black
Blue
Navy
Pink
Green
Size
Recycled Nylon
Recycled Nylon
Leakproof & Breathable
Leakproof & Breathable
Anti-Chlorine
Anti-Chlorine
UV Resistant
UV Resistant

WHY YOU’LL LOVE IT

The WUKA Racerback Period Swimsuit gives you full coverage, sleek support, and built-in protection — all optimised for performance. With a cinched waistline for a shapely fit, it keeps you comfortable and confident in and out of the water.

HOW IT WORKS

Holds up to 15ml of flow — about 3 tampons or 2 pads. Featuring a waterproof outer, absorbent gusset and anti-chlorine, UV-protective fabric, it’s designed to move with you. Comes with removable breast pads so you can choose to wear it with or without.

BEST FOR

Perfect for moderate flow days, light bladder leaks, and anyone who wants confidence while swimming. Ideal for training, sports, and water activities.

GOOD TO KNOW

Wash before first use. Reusable, and designed for both style and performance.

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

Outer: 61% Polyamide, 39% Elastane
Middle: 88% Polyester, 12% Elastane
78% Recycled Nylon, 22% Elastane, TPU
Inner: 50% Bamboo Charcoal, 50% Polyester

FAQ: Leak-Proof Period Swimwear

WUKA period swimwear is designed to absorb periods and little leaks whilst in or out of the water.

How does waterproof swimwear actually work?
WUKA swimwear features a built in absorbent gusset made of three unique layers. The breathable top layer is designed to feel soft and comfortable to the touch as it sits closest to to your skin. The second layer is highly-absorbent and moisture wicking, helping to absorb up to 3 tampons worth of blood. Lastly the final or outer fabric is aquaphobic meaning it is water repellent which prevents water from entering the gusset and protects against leaks. While it is safe to swim in period swimwear on your periods, we suggest using a menstrual cup or other products as backup on your heavy flow days.
Can I wear them on heavy flow days?
WUKA period swimwear is recommended for use on light to medium flow days. If you are using them to swim for long periods of time, they are best for lighter days. If however, you’re spending the day lounging by the pool with only the occasional light swim then they can also be worn on medium flow days. We do not recommend them for heavy flow days.
Can I wear the swim briefs whilst using other products?
Yes of course! For added protection on heavier flow days, we recommend wearing the swimsuit alongside a menstrual cup, disc or tampon- the more sustainable and plastic free the better!
What Material is your swimsuit made of?
As a certified B Corp that places sustainability at the heart of our brand mission, our WUKA swimwear collection is made from recycled nylon so no virgin plastic are used to make the fabric. Remember each WUKA replaces 200 disposables going to landfill.
What does UV50 protection mean?
Also known as Ultraviolet Protection Factor (UPF), UV protection indicates how much UV radiation (both UVB and UVA) a fabric allows to reach your skin. For example, our swimwear collection is made using UV50+ protection fabric which blocks 98% of the sun's rays and allows 2% (1/50th) to penetrate, thus reducing your exposure risk to harmful rays significantly.
How do I wash them?
Rinse them in cold water before washing to remove any excess blood. Wash them in the washing machine on a delicate program at 30°C maximum. Do not use any fabric softener or detergents. Air dry and never use a tumble dryer!
What styles are the swim briefs available in?
Two styles. The high waist style is available for adults whilst the classic bikini brief is available for adults and teens.
What sizes are the swim briefs available in?
Adult Sizes range from XS- 4XL in both the bikini and high waist swim briefs. Teens Swim Bikini Briefs are available in sizes 2XS - L.
How do I know what size of Teen Swim Bikini to buy for my child?
2XS:4-6, XS:6-8, S:8-10, M:10-12. These are just for recommendation. We know all kids grow at different rates, so the best way to get the right size is measure the widest part at the hip and see our size chart to get the right size. You can always ask our customer support if you need help. Anther way to get the size right is by matching with high-street brands, if your teen wears size 4-6 opt for 2XS, if they wear 6-8 go for size XS, If they wear 8-10, go for small size.
Can I wear WUKA swim even when I am not on my period?
Your WUKA is one period swim collection is perfect for wearing in the water- whether it's by the pool, the beach or under a wetsuit. Whether you are on you period or not, they are great to use. The leakproof gusset is built into all of our period swimwear to be discreet and undetectable, so they look and feel just like regular swimwear.
Can I return my period swimwear?
Yes! All of our swim bottoms and one-pieces are eligible for a return or exchange within 30 days of delivery, as long as the original sanitary strip and tags are attached.
Is the swimwear chlorine-safe?
Yes. Our period swimwear is seawater and chlorine-resistant which helps to prevent fading and keeps your swimwear long-lasting.
I am scared that I might leak in the pool
If you have a fear of using WUKA in the pool, we suggest you use them only on your light flow day, till you gain confidence.
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

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  • 5 stars: 8 (73%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 2 (18%)
  • 1 star: 1 (9%)
K
KAthryn S.
Great for 15yr old on holiday

This bathing costume enabled our teen to take part in all our waterbased holiday activities: swimming, surfing and canyoning. Thank you!

B
Bambie
Not true size

I bought this swimming suite for my daughter. She's 15 and wear normally XS product. I did the measurements and according to the charts, I ordered an XXS (She's thin but tall 5.6) the XXS is ridiculously small, it should be fine for a 12Y old. The return process is a pain and I have to pay. I will change for a size S but in real life, she would never wear a 8-10 size ( still according to the size chart)chary. The quality is very good tough.

D
Danielle B.
Too samll

My teen found it way too small is usually a s/ m and ordered a medium! Shame look good hopefully we can exchange for bigger size

C
CAROLYN
Absolutely Fantastic Products. Can't Recommend Enough *****

New to these products, never tried myself. My daughter started her period on her 12th Birthday and was anxious not only about her upcoming school trip to France which will coincide with her period, but also about our family holiday with cousins and grandparents whereby she was looking forward to enjoying the swimming pool. I subsequently researched this products as and decided to take the plunge. I purchased a variety of protective briefs, as well as a swimming costume and swim bikini bottoms. I paid for express delivery to ensure they arrived in time for our holiday and they did. Beautifully packaged in tissue paper, my daughter was very excited to receive them. We went for size XS and found they fitted her perfectly and will plenty of stretch to last as she grows. She is hugely fussy about clothes and is sensitive to the 'feel' of fabrics but she loved the WUKA range saying they felt so comfortable and soft to wear. She prefers them to her standard underwear. She wore them to school prior to holiday - the heavy flow pair, and they lasted comfortably all day. Baring in mind she leaves at 7.30am and returns from school at 5pm. She said she felt less self conscious, and felt dry all day without the need to change a pad. She had taken a spare pair in the little zip bag which came with the bundle we selected, but didn't need to change them until she got home. Equally she was happy wearing the 'shorts' version - super heavy over night and was comfortable there was no leaking. Furthermore my daughter was ecstatic being able to go swimming on holiday. Although it was lighter by then, she only needed to use the costume on the first day. She loves the style of the black racer back costume and the fit, you would never know it's a special protective costume! This in contrast to the other main seller of these products... I also ordered a package from their competitor and my daughter didn't like their products at all so they were all returned! WUKA won hands down with descretion, style, comfort and fit. The only thing drawback we can report is that the one piece swimming costume will last her very long as it fits perfectly now but with no grow room (unlike the underwear which gives you a stretch range of 2 sizes). The issue being the swimwear is so expensive! I purchased using a first time customer discount promotion, but she will undoubtably want to re-purchase the costume when she grows out of it which is a big outlay considering the amount of usage. I only hope we are able to obtain another promotional offer when the time comes! To conclude, whilst the products are financially a bit initial outlay, I am still so happy that I took the decision to make this purchase. I feel so happy to see my daughter confident now with no anxiety about her period at such a young age. This underwear has given her the confidence to face this huge change in her life with the smoothest of transitions. It has undoubtedly helped her mood and helped her embrace the challenges of becoming a women! She loves her new underwear range, I only wish these were around when I was young! Once my bank account has recovered, I will be investing in the WUKA underwear range for myself too, in the long run it will save me money on incontinence pads and will be far more comfortable! I will leave a review once I have trialled them myself for this purpose! I will also be purchasing for my youngest daughter when the time comes! Thank you WUKA.

K
Katie W.
Swim costume

Amazing costume, made my daughter feel comfortable on holiday

M
Melody E.
Excellent. My daughter can play waterpolo again

My daughter plays water polo. But she would have to have a week out every month. Now she is back in the pool full time with absolutely no concerns. If WUKA can save waterpolo it can save any other water based activity!
Only request is could you consider making a sport costume that is a much higher neckline than the racer, else it can cause drag in the water and not as easy to perform? Thanks

R
Rasa B.
Great swimsuit!

A day in a waterpark was a great test-run for the swimsuit. My daughter said she was over the moon she could enjoy the activities during her period and not having to worry about any leaks.
Easy to wash and dries quick too.

N
Nicola W.
Waiting for a refund

Can’t comment on the swimsuit as we sent it back (after a change of mind) and am still waiting for a refund.

S
Sophia C.
Best ever!!!!

WUKA thank you!! Your products are awesome!! If I could give you 10 stars I would!

K
Kelly O.
Soft material very comfortable

Lovely material, my 11 year old daughter wore hers all week while on holiday, turned out she didn't get her period as expected so can't comment on absorbance but she found it really comfortable to wear. We ordered a medium which was a perfect fit, she is a women's size 12 UK for reference.

Hello Kelly,
Thank you for sharing your feedback! It's great to hear that your daughter found the WUKA pants comfortable. Even though she didn't get her period during the holiday, it's good to know that the fit was perfect for her. We appreciate your support and hope that the pants continue to provide comfort and confidence when needed.
Thank you

S
S.W.
Amazing product

Both my young daughters had their period whilst on holiday and these enabled them to enjoy the pool without any worries.

I would thoroughly recommend. Really saved the girls holiday. Will also be purchasing the period pants as they were so sucessful.