Excellent product, fits true to size.
Bought these for my daughter, she loves them. Keeps her comfortable and prevents any leaks on her heaviest nights.
Great service and great product.
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.
Knicked Active Stretch™ Pre-Period Underwear
Light Protection for Puberty & First Periods
Puberty started? Discharge? Spotting? Preparing for a first period?
We've got you covered.
Our Knicked Active Stretch™ Pre-Period underwear is made from breathable silky micro-mesh with light absorbency, perfect for girls who have just started puberty. Whether it's discharge, mucus, spotting, light bladder leaks, or their period arriving sooner than expected — these offer all-day leak-proof protection so they can stay fresh and confident.
💖 What Makes Them Different?
Unlike panty liners, our Active Stretch Pre-Period features:
✔ Light absorbency (5mls) — equivalent to 1 panty liner
✔ All-day leak-proof protection
✔ Breathable silky micro-mesh material
✔ White waistband (our signature for light absorbency)
✔ Feels just like ordinary knickers
✔ Cooling, lightweight design
✔ Perfect for introducing the idea of periods
That means protection from discharge, spotting, light flow, or even light bladder leaks — without the waste or discomfort of panty liners.
🩰 Perfect For:
• Girls who have just started puberty
• Discharge & mucus protection
• Spotting & light flow
• Preparing for a first period
• Light days either side of a period
• Light bladder leaks (LBL)
• School days & everyday wear
🌿 Designed for Growing Girls
Created by a mum, designed for real puberty.
Our Active Stretch Pre-Period is:
• Light absorbency (5mls capacity)
• Reusable & sustainable
• Breathable & cooling
• Feels like regular underwear
• Made to keep them fresh and confident
Because puberty is confusing enough — protection shouldn't be.
Knicked period undies have always been and will continue to be FREE FROM NASTIES such as PUL'S (plastics) or PFAS (chemicals).
Tip: Always ensure they have 1 pair for each day of the week (especially at school), to help them stay fresh.


As a guide: Our teen model wears a size 12-14 in this style and is a ladies size 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
Knicked will exchange item(s) that have not been washed, worn and are in AS NEW condition, we request you submit our Exchange Form within 14 days of receiving your product. Knicked will cover one new shipping cost as a gift to assist - please note: if purchased on sale or outside Australia item(s) can ONLY be returned for a gift voucher to repurchase a new size or style within 5yrs.
Excellent product, fits true to size.
Bought these for my daughter, she loves them. Keeps her comfortable and prevents any leaks on her heaviest nights.
Great service and great product.