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Riana One Piece Swimsuit Girls'
A girls’ swimsuit with colorful patterns for a sporty look
Free shipping over $35
Final Sale: No returns or exchanges
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

Anatomical design
X-shaped back with crossed straps to free the shoulder blades.
Stretchiness
Soft and elastic material for maximum comfort.
Chlorine resistant
Up to 100 hours of use: recommended for occasional use.
Coverage
Average cut, without being too open, for good freedom of movement.
Product Customer Reviews

Good quality, nice colors, but runs smaller than the indicated size
Perfect fit , excellent quality
Sizing was way off
Hi, I love Decathlon as a store. Great products at a good price bur really disappointed with this purchase. Having read all the reviews why is there no notification that your sizing is incorrect either instore or online. I now have to go out of my way to go to the store or pay postage to return. Poor customer service.
Thank you for your recent feedback. We are sorry to hear that you found our swimsuits too small. We are working on new size template for children's clothes to make it more up to today's market.
Also 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 with 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 should help to choose correct size.
We hope that at least return process was smooth and you were able to exchange this model for bigger size.
Once again apologies for any inconvenience caused.
Kind regards
KORNEL
My 9 year old daughter loved this so we bought her it in age 10 ...it went no where near her. We returned this and purchased age 12 unfortunately even though this is bigger it's still too small. So we will have to return it again and try age 14 - for a 9 year old girl!!
Thank you for your recent feedback. We are sorry to hear that you had to deal with the same purchase so many times. We are working on different solutions to make our swimwear size more up to date with the current market trends. Currently we recommend to go 2 sizes up to the child age but of course this is an individual aspect of each user.
We are glad to hear that finally size age 14 was good enough and we hope your daughter enjoys her swimming lessons.
Once again apologies for any inconvenience caused.
Kind regards,
KORNEL
My daughter is 5 and having read other reviews I bought a size 8, still too small so I returned it.
Thank you for your recent feedback. We are sorry to hear that you discovered issues with the sizing of our girls swimsuit. We are aware of the issue and currently all Decathlon brands work on the new size templates to make them more accurate to the current market. We hope you were able to exchange your swimsuit for bigger size without any delays and now everything works well.
Once again apologies for any inconvenience caused.
Kind regards,
KORNEL
I ordered the size 10 for my tall 8 yr old. It fits my 6 yr old. Just. The quality and shape is good, it just is really, really small.
I bought a size 8 for my just turned 7 year old. She is quite tall so I bought a bigger size. The swimsuit arrive and although it was lovely quality and bright it was so tiny. I actually look after children so tried it on one of the 3 year olds and it fit. I live in NZ and had this posted out so can't return it. Be wary if you are buying this, it comes up very very small.
Thank you for your feedback. We are sorry to hear that the costume was well too small for your daughter. Our brands are aware of the issue with sizes and they are working on the new kids/Jr template for future models. For now we recommend to all customers to buy bigger size then age of their child.
With regards to the refund or return of product for the moment we don't provide service in New Zealand. We have plans to open Decathlon stores in Australia and probably to cover NZ with the online service but this will take a bit of time (2-3 years).
To make sure we can still find and agree solution in your case please contact our customers loyalty team with the details of your purchase at customer.enquiries@decathlon.com
Once again apologies for any inconvenience caused.
Kind regards,
Kornel Pintara Commercial Director Watersports DECATHLON
Very good value for money too.
My daughter has just turned 7 , we bought a size 8yrs and it is too small. The neck line is too low. Apart from that its made well and we like the pattern.
Страхотен бански костюм.
закупих бански за дъщеря ми, но в нейно отсъствие. на касата никой не ме предупреди, че не мога да го сменя!!!! що за политика????? не съм длъжен да чета всичките табелки в магазина
Бански я е хубав модел. Действително са умалени, може би с два номера. Ние сме на 5 г. Очакваше се да взема принципно размер за 6г. Тъй като отговаряме на см.за тези години. Но пък нямаше този размер и вземах за 8годишни. Очаквах да е доста голям,но се оказа, че ни става. Тежим 19кг. Високи сме 116см. На 5г. Но ни стана банския за 8г.
Moc hezky sedí, vzali jsme ale o číslo menší
Velice špatně uvedené velikosti. Dceři, která má 6, jsme koupili plavky větší než pro šestileté s označením 7-8 let. Vyměnili jsme. Byly mini a oproti jinému typu, který má druhá dcera, byly o hodně menší. Nakonec má podobné plavky s označením pro dvanáctileté děti. Snad vydrží, protože druhé uváděné plavky od starší dcery povolily ve švu u ramínka. Možnost sešit rovna nule. Ale velké + na závěr, že výměna jedněch a reklamace druhých, byla rychlá, příjemná a bez zdržování nebo vnucování nějakého scénáře od prodavačů, což se jinde pořád děje.
Size Guide

Additional Product Information
Composition
Main fabric: 82.0% Polyethylene Terephtalate, 18.0% Spandex ; Lining: 100.0% Polyamide
Your activities
Swimming for beginners: young beginner swimmers who are starting to swim and need ease and comfort. For her, NABAIJI offers a wide range of swimwear allowing her to swim with products that are suited to her and in accordance with her anatomical requirements
Style
X-shaped back: a swimming swimsuit should focus above all on comfort, to allow you to perform your movements with ease, without discomfort or pain. That is why it is important to choose the cut of the back of your swimsuit carefully. In X-shaped back swimwear, crossed straps allow good freedom of movement. As the straps are not fixed together, they adapt to all body types.
Material
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.
Origin
Imported
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.
Decathlon makes the difference
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Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs

Riana One Piece Swimsuit Girls'
Your location: City, ST
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
