Decathlon is now open at The Avenues Mall, first avenue, level 1, for the full list of stores please click here

Product Colors and Sizes

Special product, Innovation Special product, New Release Special product, Sale End series Personalize me Eco-design

Leony+ Girls' One-Piece Swimsuit

Sale price: 3.500 KD Regular price:
Color: Choose a color
Size: Select a size
Sale price: 3.500 KD Regular price:
Model: 8307606

Product Videos

Product Features

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

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

One-piece girls' swimsuit with racer back that stays in place whilst swimming

Freedom of movement

Y-shaped closed back with wide straps.


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

Chlorine resistance

Up to 100 hours of use: recommended for occasional use


Soft and elastic material for maximum comfort.

Product Lifestyle Image gallery

Image gallery





Product Reviews

Skip to reviews AR en
2838 reviews

Leony+ Girls' One-Piece Swimsuit
Filtered by translation missing: Loading reviews…
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.

icon-circle-checkmark Verified purchase
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.

icon-circle-checkmark Verified purchase
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

icon-circle-checkmark Verified purchase
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.

icon-circle-checkmark Verified purchase
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.

icon-circle-checkmark Verified purchase
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.

Dreadful sizing!!!

Yet again Decathlon’s sizing lets them down. Bought an age 8 for a very slim 8 year old. Compared with another retailer’s 7-8 costume the decathlon one was 6cm shorter in the body!!!! I see in previous feedback Decathlon has tried to fob customers off with something about their sizes designed to fit global markets, i.e. implying that Westerners are too fat, I suppose! However the only 8 yr old who could fit this costume in an age 8 would have to be suffering from restricted growth/ malnutrition, and therefore highly unlikely to be in the market for a swimming costume!

Lovely swimsuit but tiny size

My daughter is a slim 6 soon to be 7 year old of average height. Ordered 2 costumes in size 7-8 and there was about 4" difference in length! This one was smaller than her current one age 5-6. LSo would recommend as lovely coloured costume but buy bigger.

icon-circle-checkmark Verified purchase
Too small

Returned. Age 10 was too small for a small 8.5 year old

icon-circle-checkmark Verified purchase
Seriously misleading size hiide

Sizing guide a joke, ordered 10years for a 7year old would be more suited to a 5 year old. Surely decathlon have a responsibility to put correct labels/sizes on clothing.

Dear Julie Ann,Thank you for your recent feedback. We are sorry to hear that you found our swimsuit too small. We are working on new size template for children's clothes to make it more up to today's market and more regional as Decathlon sells the same models around the world.Also, to help to choose correct size we added to each product page, just above the box with size selection blue colour link "find your size" where you can see chart with metric and imperial height linked to each size. In addition to that we made visible customer's feedback where you can check opinion from customers about the size who already bought the product. We are working also on this tool development to make sure in the future everything is in one place and it should help to choose correct size.Please return this item to your local store or use the online procedure for full refund or exchange.Once again apologies for any inconvenience caused.Kind regards  KORNEL
Skip to reviews

Additional Product informations


Main fabric

  • 18% Elasthane
  • 82% Polyester


  • 100% 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: a swimsuit should focus above all on comfort, to allow you to perform your movements in complete comfort, without disturbing or hurting you. That is why it is important to choose the shape 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% elastane. Chlorinated water can be harmful to swimsuits which are used repeatedly in the swimming pool. The elastane fibre that gives the material its stretch property and therefore makes it comfortable, is also very 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 life cycle 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, trousers, backpacks, etc.).Decathlon chose to apply this voluntary environmental labelling scheme.Website: sustainability.decathlon.comExplanatory video:

Product Recently viewed


Size Guide Visual