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.
*NO EXCHANGES and NO REFUNDS on these clearance products, so please choose carefully! *discontinued style or the last one in a size.
Our Sleep Shorts are super heavy absorbency and are designed for those with very heavy periods whether you're a front, side or back sleeper, because we've turned absorbency on its head!! In a first for boyleg period undies these menstrual shorts offer absorbency in all 4 directions - front, back, side, and even down the inside leg. Our Period Sleep Shorts are underwear AND outerwear! (You don't need to wear extra undies underneath).
These are a relaxed fit designed for comfort while sleeping so are not as tight fitting in the legs as our boyleg/UltraGuard shorts please note you will receive a product that is tagged a smaller size to rectify them being too wide in the legs the size chart has been adjusted reflect this so please ensure you use the chart to select the correct size.
Knicked Period Undies are best for your body and best for the planet; and this style is pure period convenience and comfort in your favourite boyleg style.
Knicked period undies replace the need for regular knickers, panty liners, bulky sanitary pads, awkward and uncomfortable tampons, and silicon cups, and are the only way to feel 100% protected and secure knowing your daughter won't leak or emit odour ... pure peace of mind!
Knicked period undies have always been and will continue to be FREE FROM NASTIES such as PUL'S (plastics) or PFAS (chemicals).
Tweens and Teens Period Sleep Shorts are made from a super soft cotton-like blend with heavy absorbency, the perfect undies for super-heavy period days and all-day protection.


* To measure against another brand of underwear please use the flat lay measurements - side seam to side seam along the waistband.
As this is a clearance item no exchange on sizing is available - all sales are final
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.