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

How Does Knicked Swim Work?

BFFs | Bestie Flow Friend | 3-in-1 Period Undies | Under Swimwear~Under Dancewear~Under Anything

Size: Child 8/10

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

Customer Reviews

Based on 2 reviews
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Susan G.
BRILLIANT

We were lucky enough to be given a pair to trial and have since purchased 2 more pairs one for my younger daughter and my niece. It's mind blowing to think one pair can do so much but they do, I remember my eldest got her first period the day before school swimming and while I had Knicked period undies on hand for this day we didn't have swimmers and sadly she had to sit on the sidelines and miss out - with these never again will a mum be unprepared! Even though we have tested them thoroughly I still don't know how it works but THEY DO.

T
Tanya K.
GAME CHANGER !!

My daughter absolutely loved the BFF 3in1's and this is all game-changer for being able to just wear normal swimwear/bikini. She has also now worn them under her leo for dance and you couldn't tell and both times NO LEAKS - wow just wow. Online buying another pair for my older teen as i type this..

Customer Reviews

Based on 2 reviews
100%
(2)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
S
Susan G.
BRILLIANT

We were lucky enough to be given a pair to trial and have since purchased 2 more pairs one for my younger daughter and my niece. It's mind blowing to think one pair can do so much but they do, I remember my eldest got her first period the day before school swimming and while I had Knicked period undies on hand for this day we didn't have swimmers and sadly she had to sit on the sidelines and miss out - with these never again will a mum be unprepared! Even though we have tested them thoroughly I still don't know how it works but THEY DO.

T
Tanya K.
GAME CHANGER !!

My daughter absolutely loved the BFF 3in1's and this is all game-changer for being able to just wear normal swimwear/bikini. She has also now worn them under her leo for dance and you couldn't tell and both times NO LEAKS - wow just wow. Online buying another pair for my older teen as i type this..

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