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 DreamGuard™ Sleep Shorts
5-Way Period Protection for Tweens & Teens
Heavy or Ultra heavy flow? Overnight leaks? Sleepovers?
We've got you covered. Our Knicked DreamGuard™ Sleep Shorts are specially designed for maximum overnight protection, giving tweens and teens total confidence - even on their heaviest days.
Tired of checking the sheets every morning? 🌙 Our brand new SleepGuard™ shorts feature an absorbency band that goes right up to the front and back waistband, plus extra protection down the inside legs.
Made with 5 layers of protection in breathable bamboo, they are designed to catch every flow so you can toss and turn in total comfort.
🎁 EXCLUSIVE OFFER: 🎁 Purchase 2 or more pairs of SleepGuard™ shorts and receive a FREE plush sleep eye mask (valued at $9.95) to complete your ultimate dream setup!
💖 What Makes Them Different?
Unlike standard period underwear, our Sleep Shorts feature 5-way absorbency protection, including:
✔ Wide absorbent band right up to the front waistband
✔ Extended wide protection up to the back waistband
✔ Built-in side leak panels down the inner legs
✔ High-capacity absorbent core
✔ Secure, comfy fit that stays in place all night
That means protection from front leaks, back leaks AND side leaks - perfect for tummy and side sleepers.
🌙 Perfect For:
• Heavy/super heavy flows
• Overnight protection
• Sleepovers & school camps
• Extra peace of mind
• Active sleepers
🌿 Designed for Growing Bodies
Real protection for real periods, designed by a mum who understands.
Our Sleep Shorts are:
• Ultra absorbent
• No inside tags so perfect for sensory issues
• Reusable & sustainable
• Soft, breathable & comfy
• Made to move with you
"Because even on heavier nights, nothing should interrupt a good sleep"
Knicked period undies have always been and will continue to be FREE FROM NASTIES such as PUL'S (plastics) or PFAS (chemicals).


* To measure against another brand of underwear please use the flatlay measurements - side seam to side seam along the waistband.
As a guide: Our teen model on the bed wears a size 12/14 in this style and is a ladies sz 8 and our 2nd model fits both the size Child 10/12 and Teen 12/14 in these photos is wearing the Child 10/12 and usually wears a ladies size 6.
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.
After a year of leaking out the leg holes of evey other brand of period undies, my daughter finally had a leak-free period! I am so happy that we found a brand that adds extra absorbency right where she needs it. These are now her go-to undies for the first days of each cycle.
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.
My poor tween has a super heavy cycle and before finding Knicked leaked over the sides of every brand she tried. These sleep shorts are the BOMB as have padding right up the front/back PLUS the inside legs so for the first hasn’t leaked at all - initially bought one pair to try and my sweet girl asked for a hundred pairs of these !! It’s the first time in 18months she’s truly felt protected and they look super cute and are sooo soft but as to be expected take a while to try hence why we now have 7 pairs. Thank you for really understanding and creating a product that actually works
My daughter absolutely loved these and wears them during the day as well because they’re comfy and she hates the way pads feel. It’s very well made with natural feeling fabric. The customer service is excellent as well.!