How to make your daughter's first period EASY and FUN!CLICK HERE TO READ.
Welcome to Knicked, Welcome to Puberty and Periods SHOP HERE
Terms & Policies
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.
*NO EXCHANGES and NO RETURNS on these clearance products, so please choose carefully! *discontinued style or the last one in a size.
Knicked FlowerPower™ Period Underwear
Limited Edition Heavy Protection with a Pop of Colour
Tired of boring black? Want heavy protection with personality? Love a bit of fun?
We've got you covered.
Our Knicked FlowerPower™ period underwear is a limited edition pop of colour that makes heavy period days a little brighter. Made from breathable cotton blend with stretch and heavy absorbency (25-30mls), these are perfect for overnight or all-day protection — with way more personality than plain black.
💖 What Makes Them Different?
Unlike boring period underwear, our FlowerPower features:
✔ Heavy absorbency (25-30mls) equivalent to 5 regular pads or tampons
✔ Up to 10 hours of protection
✔ Limited edition floral print
✔ Breathable cotton blend with stretch
✔ 5-layer construction
✔ Pink waistband (our signature for heavy absorbency)
✔ Active brief style
✔ Eco-friendly compostable packaging
That means all-day or overnight protection in a fun, colourful design - because periods don't have to be boring.
👍🏼 Perfect For:
• Tweens & teens who love colour
• Overnight protection
• All-day wear
• Heavy flow days
• Anyone tired of boring black
• Limited edition collectors
🌿 Designed for Fun & Confidence
Created by a mum, designed for real periods.
Our FlowerPower is:
• Heavy absorbency (25-30mls capacity)
• Reusable & sustainable
• Breathable & stretchy
• Fun limited edition design
• Made to keep you dry and confident
Because periods shouldn't mean sacrificing style or fun.
Knicked period undies have always been and will continue to be FREE FROM NASTIES such as PUL'S (plastics) or PFAS (chemicals).


As a guide: Our teen model wears a size 12-14 in this style and is a ladies sz 8 (waist: 67cm hips: 89cm)
* To measure against another brand of underwear please use the flatlay measurements - side seam to side seam along the waistband.
Tracked postage is $9.95
Express postage is $14.50
Orders over $99 receive complimentary FREE REGULAR SHIPPING
*NO EXCHANGES and NO RETURNS on these clearance products, so please choose carefully! *discontinued style
Less bulky, yet more secure than another brand that had leaked, these were a great find.
Also a nice change from plain black.
After mostly all black pairs, my tween was so happy with these! Great absorbency and design.
Awesome ✨
My daughters LOVE these - no leaks, super comfy, a gorgeous pattern and feel like normal underwear.
My daughter loves these knickers - nice , comfortable design and great quality material.
My daughter loves them and I’m care free during those times of the month. It’s the best undies for periods especially during school days.
My daughter loves them and I’m care free during those times of the month ❤️
My daughter just entered this new phase of her life and I'm so glad these exist. Stressfree and so much nicer than what I had as a child.
The design is very cute but even more, the undies are comfortable and don’t feel different to regular underwear. Has given great confidence to my daughter going to school and overnight. I will be ordering more!
I’ve been purchasing knicked as the starting point for all of my girls, it’s the only undies suitable for younger sized bodies. I’m just grateful to give them all a nicer option!
Miss 12yr loves these as they are "much more comfortable that the other brand"
My 12 year old daughter loves these undies. We initially bought just a few pairs and she feels so comfortable wearing these she asked me to buy her more. We tried several other major brands with leakage problems, but not a single issue with these. They are even great at night time. I highly recommend. Great customer service too. Thanks for making the journey for my daughter and this mum a little easier.
Daughter loved the flower pattern, shape and comfort of these.
Went up a size (she’s 14-16 and already has lighter flow pairs in that size that fit perfectly) got 16-18, to grow into, but due to stretch still fit comfortably.
Her period is still quite unpredictable so these give her such confidence. Although the heavier flow ones feel lots thicker, they don’t bulk her out, or show any more than normal undies.
We ❤️ love this brand.
After sales service, if you happen to have any issues, is also above and beyond!
These flower power knickers are just as fantastic as the other design but adds a bit of colour in for my daughter. Sometimes you get a bit tired of just plain black for an entire week. :-)
bright, comfy and absorbent. nice change to boring black colour
These are so pretty and a nice change from black period undies. They are just as comfy as the rest. Absolutely love them!!
A lovley pair of nickers great fit very absorbent cute design highley recomed
These
Very nice nickers great fit highlighley recommend these