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Leony+ 1-Piece Swimsuit Girls'

Sale price: $5.00 Regular price: $5.99

1-piece girls' swimsuit with racer back that stays in place while swimming

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Size Guide

This product runs small

Sale price: $5.00 Regular price: $5.99

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8307606

Product Videos

Product Features

A photo of the Leony+ 1-Piece Swimsuit Girls' in use

Leony+ 1-Piece Swimsuit Girls' | Designed for young beginner swimmers who are starting to swim and who need ease and comfort

1-piece girls' swimsuit with racer back that stays in place while swimming

Freedom of movement

Y-shaped closed back with wide straps.


Average cut, without being too open, for good freedom of movement.

Chlorine resistant

Up to 100 hours of use: recommended for occasional use


Soft and elastic material for maximum comfort.

Questions & Answers

Product Customer Reviews

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Leony+ 1-Piece Swimsuit Girls',pink
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Sizes are horrible

I ordered this swimsuit for my 6 year old and read it ran small, so I ordered the size for 8 year olds. It was still way too small... The size for the 8 year olds is more for a 4 year old. Not sure what this company is using for sizing kids, but they are WAY off. The suit itself, was made well, outside of the sizing issue.

Runs small

Get at least 1-2 sizes up for the age

Swimming costume review

This is a great swimming costume, pretty well made and designed for the price paid for it. We had to go several sizes up to get a costume that fits my child. She is a tall 9 year old and in Decathlon is an age 14 already. I bought this costume quite recently, but what I would say is that there is already some wear and bobbling around the buttock area of the costume. I’m not sure if it’s wear from swimming or washing or even sitting on the side of the pool, but it seems to be happening quite soon compared with other brands. Anyway, other than that this costume serves a purpose at a competitive price.

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Should have read the previous review before...

As everyones else, after checking the size chart, I bought a size 6 for my 5 years old. It fit perfectly my 2 years old... What a joke!!!

Hi Florent, thanks for your purchase and sorry to hear you and your daughter weren't happy with it. We are aware our sizes have different fitting, we are always trying to make this information clear for our customers. You can return the swimwear even after use, up to 365 days from the date of purchase. You will be able to exchange or get a full refund. We are looking forward to see you again and we will be happy to help you finding suitable for your daughter's needs!

Too small

Bought age 10y for my slightly small 10 year old. It’s far too small for her. Too small for my average sized 8y old too. I’ve given it to a 4y old and it looks like it’ll fit perfectly.

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Sizing is bad . Materials feel good.

I ordered the size 10ys . It certainly won’t fit a 10yrs. It looks more like for a 3 years old. Had to return it. Very disappointing.

Girls swimming costume

Good for swimming with school and bright but had to go 2 sizes bigger for my 8year old.

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Nice swimsuit but sizing smaller than small

Attractive swimsuit, but the sizing is atrocious. My tall 4 year old has already outgrown the size 10 I bought her! Sort the sizing out Decathlon. She's usually 2 sizes bigger, but 6+ sizes out is ridiculous.


Bought an age six for my very skinny six year old, it just fits my two year old, absolutely ridiculous sizing!

Dear Amanda,

Thank you for your recent feedback. We are sorry to hear about the issue with size of our swimsuit. The age size is the only advice on the product as children may vary a lot from each other. From our experience we usually recommend to go with two size up.

We hope this issues will be reduced by our new collection models starting to arrive from next spring season. They will be made based on new size template, more up to date with the current market trends.

Please do not hesitate to return your swimsuit to the local store or use the online procedure for full refund or exchange.

Once again apologies for any inconvenience caused.


Kornel - Water Sports Commercial Leader

Great quality

The reason I gave average is the quality is great but the sizing is very small, ordered age 6 for my 3 year old and it’s still too small! And she isn’t a big child

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Sizing is awful

Bought this in size age 10 for a small 9yr old, It is ridiculously small, I would say this would fit a 5yr old. Sort your sizing out, now I need to go shopping again :(

Ridiculous sizing

Tried an age 10 swimsuit on my 8 year old, it was tiny! Got an age 12 which is still stupidly small. Please take this off sale and re do the sizes to stop wasting people's time. Should have read reviews first!!

totally wrong sizing!

I bought this swimsuit in size 8 yrs for my 5 year old daughter with the idea of her growing into it. It was too small! My daughter is not overweight, just slightly taller than average.

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Small in size

This is very small in size. I have just bought an age 12 one for my small 8.5 year old. It won’t last much longer.

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Sizing extremely misleading

As others have already noted, the sizing of this swimsuit is ridiculous. Having considered other reviews, I ordered a size 8 years for a just turned 5 year old - it's probably more suited to a 3/4 year old. While Decathlon does provide sizing information, the size 8 years (125-132cm) swimsuit is 4 cm shorter than the suit (age 4-5 years, 104-110 cm) it was supposed to replace. It's a shame as the suit is a nice design but it's impossible to order with any confidence.

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Size Guide

Size Guide Visual

Additional Product Information


Main fabric: 82.0% Polyester cationic, 18.0% Spandex ; Lining: 100.0% Polyamide

Your practice

Beginners swim: young beginner swimmers who are starting to swim and need ease and comfort. For her, Nabaiji offers a wide range of swimwear that allow her to swim with products suited to swimming, but that also meet anatomical requirements


Y-shaped back: above all, a swimsuit should focus on comfort to allow you to move with complete freedom, without restriction or pain. That is why it is important to choose the cut of the back of your swimsuit carefully. A Y-shaped closed back swimsuit is ideal if you have a larger bust.


Material: 80% polyamide / 20% spandex. Chlorinated water can be harmful to swimsuits that are used repeatedly in swimming pools. The spandex fiber that gives the material its stretch and therefore makes it comfortable, also becomes fragile when in contact with chlorine. If you swim occasionally, this material will be fine for you. If you swim regularly or intensively, opt for a 100% polyester material.

Use restriction

Not recommended for use on slides.

Score to compare the environmental impact of products

The environmental impact of the product is calculated over its entire lifecycle and with different indicators. An overall score (ABCDE) is attributed to help you easily identify the products with the best environmental performance by comparing products of the same type with one another (T-shirts, pants, backpacks, etc.).Decathlon chose to apply this voluntary environmental labeling system.Website: sustainability.decathlon.comExplanatory video:

Storage instructions

Store in a dry place.



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    Minimal retail footprint

    lowers overhead and indirect costs


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