![Person wearing a red floral long-sleeve thermal rash shirt on a beach [model_fit: Courtney wears Ladies 16 (L16)]](http://www.kozii.com/cdn/shop/files/2_6d2a9e96-1b1b-4aa3-8992-032f50fe7553_1024x1024.jpg?v=1777955152)
![Woman wearing a blue patterned swimsuit on a beach [model_fit: Ellie wears Ladies 10 (L10)]](http://www.kozii.com/cdn/shop/files/Oneapplication.You_llseewhy99_recommendit._7_1024x1024.jpg?v=1780025852)
![Woman wearing a pink swimsuit with white patterns and goggles, standing outdoors. [model_fit: Ellie wears Ladies 10 (L10)]](http://www.kozii.com/cdn/shop/files/19_f641356b-adcc-4007-9ff0-e79b49798314_1024x1024.png?v=1780040443)
KOZII SWIMWEAR ARE PROUD TO SUPPORT DIVING AUSTRALIA
![Woman in black thermal rashshirt outfit stretching outdoors with a clear blue sky. [model_fit: Ellie wears Ladies (L10)]](http://www.kozii.com/cdn/shop/files/26_26e34ac6-3bf9-4dad-a572-be0a1f68067f_1024x1024.png?v=1780041524)
Let customers speak for us
Felicity Hempenstall
Under promise over deliver on product, ordering, despatch and delivery
Very warm and suitable for winter land holidays as well as in the water
ONYX THERMAL TIGHTS
Customer
I love this thermal rashie
I love this thermal rashie. It gives me full movement and extra protection from the cold in the water and from the wind out of the water.
FRANKII THERMAL FITTED RASHIE
Joanna Bartlett
Great bottom coverage
Great bottom coverage, beautiful aboriginal design and color.
WAMBURA XOVER ONE PIECE
Joanne Rolfe
Excellent thermal rashie’s
Excellent thermal rashie’s. My kids use them for when they are teaching swim lessons and said they keep them so warm. A huge thumbs up from us
ONYX BLACK THERMAL FITTED RASHIE
Anonymous
Great purchase.
Great fit, good coverage of my bum, nice thick supportive straps. Love the design of the fabric.
I bought a L10 and I’m an 8-10 in clothes.
MAGARRA XOVER ONE PIECE
Anonymous
Great fit and good
Great fit and good quality
TYPHOON RACER
Nicole Druce
What a beautiful product
What a beautiful product. Great quality, great service. I’m normally a size 14 I did size up to 16 and the swimmers fit perfect nice and firm but I didn’t stress about size because I got the unlimited exchange for 3.50 just for price of mine what a great safety net.
Colours are stunning, Im 53 and I like my cossie to cover my bum so I purchased the XOVER ONE PIECE and it does. Highly recommended this style.
Free Unlimited Return for $3.50 Valid in AU.
Sandra Wells
Good quality togs
Good quality togs, very tight fit, fantastic whilst swimming my laps!
Recommend togs, but make sure you measure yourself before purchasing.
Go up one size if you don't want firm fitting one piece.
NGARRAN XOVER ONE PIECE
Rachel Stuckey
Great fit
Great fit, I sized up one and fits perfectly. Super good quality and still feels soft after the first swim
Free Unlimited Return for $3.50 Valid in AU.
Louise Moore
I’ve been really happy with my Kozzi swimwear
I’ve been really happy with my Kozzi swimwear. I bought it for my Aqua Fit classes, and it’s been comfortable, supportive, and holds its shape well after regular use. The quality is excellent, and it fits beautifully without riding up or feeling restrictive. It’s great value for money, and I’d definitely recommend Kozzi swimwear to anyone looking for a reliable swimsuit for water exercise or regular swimming.
Free Unlimited Return for $3.50 Valid in AU.
Shelly Douyere
I’m a size 18 usually
I’m a size 18 usually, but to get over my shoulders I went to a 20, still no go so I gave to my sister.
Went to the 24 & they are perfect. Cook Islands is going to look fabulous
LAGUNA RED XOVER ONE PIECE
Mrs Kelly A Taylor
Lovely pattern
Lovely pattern. Need to upsize due to small make.
MAGARRA XOVER ONE PIECE
Terry Kircher
comfortable wearing and looking sharp in the
comfortable wearing and looking sharp in the pool
Free Unlimited Return for $3.50 Valid in AU.
Anonymous
cheers
cheers, very happy and love the print😉🏄🏾
NALU RED BASIC JAMMER
Customer
Quality swimwear
These are the best swimwear I have bought. Perfect fit, so well made and the quality of the material is exceptional. I love them!!!!
FRANKII XOVER ONE PIECE
Blog posts
Plus-Size Swimsuits for Larger Bodies: A Guide to Finding the Perfect Fit
A practical guide to finding plus-size swimsuits that actually fit well, feel supportive, and stay comfortable in the water. Learn what to look for in fabric, structure and design.
Chlorine-Resistant One-Piece Swimsuits: Are They Worth It?
Chlorine-resistant one-piece swimsuits are designed to last longer in the pool by resisting fading, stretching and fabric breakdown. Learn how they work, who they’re best for, and whether they’re worth the investment for regular swimmers.
Supportive Swimsuits for Larger Busts: How to Find Real Support
The most supportive swimsuits for larger busts have a built-in shelf bra or strong inner support layer, wider straps, a secure back (such as a crossover back), and full coverage through the bust and torso. A one-piece generally gives more support than a bikini. At Kozii, our full-coverage one-pieces offer shelf-bra options and a crossover Xover back designed to keep everything secure.