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Best Sellers

Explore our most loved baby, toddler and kids swimwear, chosen by families across Australia for comfort, sun protection and thoughtful design. This collection includes our most popular baby bathers, rash sets and UPF50 swimwear.

From newborn swimwear to toddler swimwear and kids swimwear Australia, these pieces are designed for beach days, pool time and everyday water play — soft on skin, safe in the sun, and built to last beyond one season.

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Child in a floral girls swimsuit standing on sand with plants in the backgroundChild wearing a floral swim sun hat and rash swim set on a sandy beach.

Bloom Girls Rash Set

$68.00
Child in a bright hi vis  red rash suit swim set sitting on a white ledge with a tree and white wall in the backgroundChild wearing a bright red swimsuit standing in front of a 'Private Residence' sign.

Citrus Red Rash Set

$68.00
Sale
fluro neon bright orange toddler kids unisex rash swim setTwo children in outdoor clothing walking through a grassy area with trees in the background.

Neo Rash Set

$68.00$59.95
Sale
Olive rash set for girls and boys and babies laying flat on the sandChildrens olive rash guard top and swim short

Olive Rashie Set

$68.00$64.00
Sale
Child in a floral dress standing on a sandy beach with dry grass and twigs around.Two children walking on a sandy surface, one in a colorful girls nappy change swimsuit and the other in boys lightweight shorts for summer.

Snap Swimsuit - Floral Dream

$64.00$58.99
Sale
toddler girl in a pink and white striped nappy change swimsuit standing on wooden steps outdoorsbaby girl wearing a striped long sleeve swimsuit outfit on wooden steps with text about chemical-free and OEKO-TEX certified products.

Snap Swimsuit - Candy Stripe

$64.00$58.00
Sale
yellow girls reversible  two piece swimsuit pink gingham girls reversible  two piece swimsuit

Riva Reversible 2 Piece Long Sleeve Swim Set

$64.00$54.00
one piece brown swimsuit child

All in One Rash Suit - Natural

$64.00
Sale
Child playing in shallow water wearing a green swimsuit.Child wearing a green long-sleeve rash guard and shorts standing on a beach.

All in One Rash Suit - Forest

$64.00$55.00
Sale
Child in a red rashsit outfit standing on a log by a body of wateryoung child playing at beach in a bright neon red one piece rashie

All in One Rashie Swimsuit - Bright Red

$64.00$58.00
Sale
premium navy blue rash set for kidsChild wearing a hat and navy rash set standing on a sandy surface with trees in the background

Navy Rash Set

$68.00$59.99
Sale
bright baby toddler boy rash guard. bright baby and boys swimwearvibe baby and toddler rash guard and swim short set that is bright and easy to see boys swimwear set

Vibe Rash Set

$68.00$58.00
Sale
baby-swimsuit-with-nappy-change-snaps

Snap Swimsuit - Cherry Bomb

$64.00$59.95
Sale
Animal baby rash swim set. Boys swimwearBaby and childs swimsuit with girrafes, zebras, tigers and elephants on it. Boys swimwear

Rash Guard Top & Short Swim Set - Animal Kingdom

$64.00$55.00
Child wearing a light purple romper standing on sand with a dark backgroundTwo children in purple rompers standing on a sandy beach with clear blue sky.

Harper Sunny Suit - Lavender

$44.00
Sale
Green and white striped pants worn by a child on grassTwo children on a blanket outdoors, one child is lying down and the other is standing.

Happy Pant - Green

$44.00$39.95
Sale
 elastic waisted pink and white stripe toddler girls beachwear wide leg pants and a shell anklet pink and white stripe toddler girls beachwear pants and a shell anklet

Happy Pant - Pink Stripe

$44.00$39.95
Sale
pink baby girls beach cover up pink baby girls beach cover up bubblegum

Harper Sunny Suit - Bubblegum

$44.00$35.00
Sale
Person holding a pink cap with 'ahoy' text on a beachPink cap with embroidered designs on a scenic background of water and mountains

Ahoy Cap – Kids Beach Hat

$39.95$27.95
Child wearing a red cap with 'Fishies Beach' text, sitting by water.Person wearing a red cap with 'Fishies Beach Club' text on a sandy . cap is a kids cap and bright red background

Fishies Beach Club Cap Red - Kids

$38.95
Child wearing a blue cap with 'Fishies Beach Club' logo and green and white striped shorts on grass.Blue cap with 'Fishers Beach Club' logo kids cord cap on sandy ground with plants in the background

Fishies Beach Club Cap - Kids

$38.95
Sale
baby and toddler girl swimwear beach cover upbaby and toddler girl swimwear beach cover up lemon

Harper Sunny Suit - Lemon

$44.00$35.00
girls shell white anklet by Australian children's swimwear for infants label, Len Swimgirls and women's white and gold shell anklet  by Australian children's swimwear for infants label, Len Swim

Shell Anklet

$12.95

FAQ

Yes — and once you understand why, you'll never buy regular baby swimwear again.

Removing a wet swimsuit from a baby or toddler the traditional way means pulling tight, soaking fabric up over their arms, across their shoulders and over their head. For babies whose shoulder and hip joints are still developing, repeated forced arm movement during swimwear removal places unnecessary stress on small, still-forming bodies. For toddlers who are wriggly, overtired and desperate to get back to the water — it's a safety risk on wet, slippery surfaces that every parent knows all too well.

Snap-change baby swimwear solves this completely. Len Swim's signature snap-change design features nappy-change snaps built into the crotch of every infant and toddler one piece swimsuit. Changes happen from the bottom — arms stay in sleeves, heads stay out of it, and the whole process takes seconds instead of minutes.

For parents asking "what is the easiest baby swimwear to change at the beach" — this is the answer. For parents of babies in hip dysplasia harnesses, toddlers in toilet training, kids with sensory sensitivities, or anyone who has ever lost their mind trying to remove a wet rashie from a two-year-old — snap-change swimwear is the single most practical innovation in Australian kids swimwear.

No wrestling. No tears. No stress on little shoulders.

Snap change baby swimwear, nappy snap swimsuits, easy change toddler bathers and infant swimwear with snaps — all available at Len Swim in sizes 000 to 9.

Len Swim beachwear is designed with a deliberate relaxed, oversized fit — the kind that looks effortless on kids, survives a full beach season, and still fits next summer. Here's exactly how to size each piece:

Harper Suits & Beach Pants — size to your child's age. Our kids' beach pants and harper jumpsuits are cut generously and designed to be cuffed at the ankle when longer. This isn't a sizing issue — it's intentional slow fashion design. One size covers two seasons.

Tops — size to age for a standard fit. Go up one size if you want the relaxed, dropped-shoulder, oversized look you see in our campaign imagery. All Len Swim editorial shoots style tops a size up for that authentic, sun-soaked, Mornington Peninsula feel.

Parka — our kids jacket is cut oversized by design. Size to age. It's built to be layered straight over a knit or vest, thrown on at sunset, and worn until it's completely falling apart — which, given the quality, will take a while.

All Len Swim kids beachwear is made from sustainable fabric — + the same no-nasties standard. Because what touches their skin during play shouldn't change just because they've stepped out of the water.

Purchase size to age. (If theyre 4, order a 4). We do recommend sizing up if your child is between sizes or a bigger build — our swimwear is designed to last beyond a full season and a little extra room is always better than too snug. Our fabric has a generous stretch so it moves with them — but if your little one is tall for their age, go up a size for sleeve and torso length. When in doubt, check our size guide or reach out and we'll help you find the right fit.

3M-6M does run smaller (we are popular with the premmie and tiny tots!) so please size up in NB - 1 size if you want it to last a little longer. They grow very quick at this age. Our snapsuits all run to a standard (slightly generous) fit and our rash sets are designed to be worn slightly oversized to last so these run generous also.



Yes — and it's one of the most important things Australian parents can do at the beach or pool that nobody talks about enough in a situation where there is a lot of little people about. Bright, high-visibility swimwear for babies and kids is recommended by aquatic safety experts for one simple reason: children in bright colours are dramatically easier to spot in the water. Deep, muted colours can become almost invisible beneath the surface, in glare, or in choppy water pending the conditions. A bright rashie, a bold swimsuit or a vibrant red baby bather can be the difference between spotting your child instantly and scanning a crowded beach in a panic.For babies and toddlers especially — who move fast, go under without warning and can't yet call out for help — high-visibility kids swimwear is a layer of passive safety that requires zero effort from a parent. You just put it on them. Because the safest kids swimwear in Australia isn't just the one with the best sun rating. It's the one you can see. Bright kids swimwear. Because finding them fast matters more than anything.

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