Why it's important you only wear BREATHABLE period underwear.

How Does Knicked Swim Work?

Teen Self-Tie Period Swim Bikini - Heavy Absorbency with StopLeak

Size: XS-S

Size chart
Knicked Tween & Teen Period Underwear Size Guide

Please see each product page, for individual sizing.

As a general rule, please choose the same size for our period undies and period swimwear as your child's regular underwear size.

Our period underwear is designed here using Australian Child/Youth underwear guidelines. It's important to note that child sizing, also crosses over into women's sizing at our 12/14, so we have also shown this on our sizing charts (on each individual product page) to assist.

We also understand purchasing online can make judging sizing difficult and everyone has a different body shape (literally hundreds of waist & hip combinations) so we have created guides on each product page to help you choose the best fit for each product, or feel free to email our helpful team at theteam@knicked.com.au with waist & hip measurements so we can assist further.

To measure against existing underwear: use the flat lay measurement (side seam to side seam on the waistband) to compare with their current underwear.

Don't panic if you do find you've ordered the wrong size, KNICKED will happily exchange sizing and also cover the postal costs to reship (once per order) as long as underwear has been tried on over clean underwear and returned in AS NEW condition (not washed/worn free of lint/hair/marks), and packaging in original condition.

Please click here for our Exchange/Refund Forms & Guidelines to organise an exchange. 

Reviews

  • 5 stars: 24 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
S
Sarah (Sydney, NSW)

Excellent bikini bottoms and look like normal swimwear. Very impressed and would highly recommend.

H
H.P.

Super seamless and lovely fit

A
Amanda M. (Sydney, NSW)

Cute, discreet, quick postage
Thanks

A
Anonymous (Perth, WA)

They fit really well and look just like normal bikini bottoms

A
Anonymous (Sydney, NSW)

So so handy x

M
M.k.

Awesome, my daughters love them

S
Sally F. (Perth, WA)
Self tie bikini bottoms

I was worried that these bathers wouldn't be secure enough to 'do the job' but they are just as effective as the regular bather bottoms that we bought last summer.
Knicked - you have saved my daughter's summer days again!

L
Louise (Sydney, NSW)
Very Happy with the quality

Will be buying again, great swimmers.

S
Summer F. (Canberra, ACT)

Very good

A
Ash W. (Sydney, NSW)
Great

Well made and quality fabric. My daughter loves hers, saying they work so good and are really comfy.

K
Karly D. (Sydney, NSW)
Bikini bottom

Amazing, thank you sooo much
My 15 year old was so worried about summer and she went a whole week with the bottoms and had no leakage at all even on heavy days!!

A
Alinda G. (Perth, WA)
Just like her normal bikini

My daughter was really pleased to receive these bather bottoms and find out that they look just like her normal bikini bottoms. No more missing out on summer fun this season!

B
Belinda T. (Melbourne, VIC)
Worked very well

Needed to size down - we bought a small but my daughter actually needed an XS, they are on the bigger side.

N
N.S. (Brisbane, QLD)
Amazing!

I'm so happy with this purchase!! not only is it comfortable and looks flattering on, but there is no leakage at all. Amazing product :))

A
Adele

Love it!

A
Adriana C. (Brisbane, QLD)
Quick Delivery Good Sizing and Quality

Easy to order, quick delivery, and sizing very flexible. Good quality and versatile swimmers.

j
jo c. (Central Coast, NSW)
The best thing ever

Got them for my 2 girls age 13 and 18 they have change the way we can now do so much with planning our holidays very happy no my worrying about that time of the month life changing

R
Rachael C. (Sydney, NSW)
Highly recommended!

My daughter recently got a pair of these and loves them. They look great and she said they were comfortable. She is a women’s size 8 and the S/M fit her perfectly. Customer service team were prompt and helpful. Thank you :)

B
Bev H. (Perth, WA)
Great bikini bottoms

Fantastic bathers, look stylish, fit perfectly and you would never know they were period bathers. Love them

T
Taylah S. (Brisbane, QLD)
love them!!

so comfy and not noticeably different xx

S
Sue V.W. (Gold Coast, QLD)
Excellent quality, fit and serviceHi,

My 15 year old daughter has quite heavy periods and I can confidently say that the self tie bikini bottoms did the trick, no leakage, for hours and hours at the beach each day. Escellent product, fit was excellent and couldn't tell it wasn't usual bikinis. great job.

N
Nahla K. (Melbourne, VIC)
Look “normal”

MU daughter was so happy with these as they look just like normal bikini bottoms

S
Saraih F. (Gold Coast, QLD)
The best and most comfortable period swimwear

My daughter is in love with these swim pants she felt confident in the water wearing them and would like more in the near future

C
Claire D. (Newcastle, NSW)
Double threat - Cute and Practical

My fashion-conscious 14 year old LOVES these bikini bottoms. We live on the coast and so she basically lives in swimmers all weekend. These lasted all day with no 'leakage' issues which is fantastic. She loves the look of them so much she wants to wear them even when she isn't on her period.

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