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.
Summer Floral Period Swim Set - 3 Pieces
Criss-Cross Back with Heavy Absorbency
Make a splash this summer with our Teen Period Swimwear Sets! This 3-piece Summer Floral set includes a criss-cross back feature and bikini bottom with adjustable side ties. Plus, choose between our High-Waisted with StopLeak or original period brief with removable side ties for ultimate comfort. Dive in now!
💖 What Makes It Different?
Unlike regular swim sets, our Summer Floral Set features:
✔ Summer floral print
✔ Criss-cross back feature
✔ Choice of bottoms (Original OR High-Waisted)
✔ Heavy absorbency period protection
✔ PLUS matching bikini bottoms
✔ Adjustable side ties
✔ High-Waisted option has StopLeak
✔ Complete 3-piece set
That means summer floral style PLUS your choice of period-proof bottoms PLUS regular bottoms for non-period days!
🏊♀️ Perfect For:
• Beach & pool days
• Heavy flow protection
• Summer floral lovers
• Criss-cross back style
• Period days AND non-period days
• Adjustable fit
• Complete summer set
🌸 What's in the Set:
• Your choice either our heavy absorbency swim briefs with removable side ties OR our High-waisted swim brief with StopLeak technology
• Summer Floral top with criss-cross back feature and matching bikini bottoms with adjustable side ties for those non-period days
Please note: Knicked only manufactures the period swim bottoms, we purchase the additional pieces separately, therefore sizing may be variable. Before submitting an exchange form please ensure the actual period swim briefs have been tried on for sizing.
🌿 Designed for Summer Fun
Created by a mum, designed for real periods.
Our Summer Floral Set uses:
• Same technology as our heavy absorbency period underwear
• PLUS a waterproof layer
• Choice of Original OR High-Waisted bottoms
• Criss-cross back design
• Made to keep you protected in and out of water
Because Knicked Swimwear allows girls to NEVER miss out on the fun when it comes to the water.
Knicked period undies have always been and will continue to be FREE FROM NASTIES such as PUL'S (plastics) or PFAS (chemicals).
Our teen model is wearing our period swim briefs in size 12/14 and wears a ladies 8 in clothing.

* Please see our swim FAQs for more information.


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.