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

How Does Knicked Swim Work?

Teen Period Underwear ~ Active Stretch

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 85 reviews
94%
(80)
6%
(5)
0%
(0)
0%
(0)
0%
(0)
L
Lana
One of the best purchases I have ever made for my daughter!

Hands down one of the best purchases I have ever made for my daughter (and believe me, I’ve made plenty!). She’s been suffering with pads for the last four years. She was not comfortable try cups or tampons so I had to find her an alternative. There are so many options of period undies online nowadays, it took me some research, and I am so glad I chose Knicked. No more leakages, it holds more than most period undies I found online, quality is exceptional, fabric of the active stretch is so soft and breathable, easy to clean, the fit is great for teens (my daughter is petite and there’s no trouble with the fit around the thighs), sizing guide online is so easy to follow, customer service is prompt and informative. Cannot fault this product or company. My daughter sleeps better and never has to worry about leaks or constantly changing pads at school. Her periods are no longer a burden. Best investment ever.

C
Christy A.W.

Really good absorbency, no leaking on heavy days.

L
L J.
Reliable

2nd time to order. My daughter hardly had any leaks even at nights. Although i prefer the previous style where the brand name is not so bright.

C
Carren M.
Stretchy and fabulous

Ms 10 has asked for more of these, and unlike other brands they washed well (both pre wash and after use), no staining, no leakage. Very happy.

C
Claire S.
So comfy

My daughter finds these so comfy to wear. Love the breathability of them and they do the job.

Customer Reviews

Based on 85 reviews
94%
(80)
6%
(5)
0%
(0)
0%
(0)
0%
(0)
L
Lana
One of the best purchases I have ever made for my daughter!

Hands down one of the best purchases I have ever made for my daughter (and believe me, I’ve made plenty!). She’s been suffering with pads for the last four years. She was not comfortable try cups or tampons so I had to find her an alternative. There are so many options of period undies online nowadays, it took me some research, and I am so glad I chose Knicked. No more leakages, it holds more than most period undies I found online, quality is exceptional, fabric of the active stretch is so soft and breathable, easy to clean, the fit is great for teens (my daughter is petite and there’s no trouble with the fit around the thighs), sizing guide online is so easy to follow, customer service is prompt and informative. Cannot fault this product or company. My daughter sleeps better and never has to worry about leaks or constantly changing pads at school. Her periods are no longer a burden. Best investment ever.

C
Christy A.W.

Really good absorbency, no leaking on heavy days.

L
L J.
Reliable

2nd time to order. My daughter hardly had any leaks even at nights. Although i prefer the previous style where the brand name is not so bright.

C
Carren M.
Stretchy and fabulous

Ms 10 has asked for more of these, and unlike other brands they washed well (both pre wash and after use), no staining, no leakage. Very happy.

C
Claire S.
So comfy

My daughter finds these so comfy to wear. Love the breathability of them and they do the job.

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