Riana girls' one-piece swimsuit

Regular Price: € 9.59 -31%

€ 6.59

Designed for occasional swimmers who train less than once a week.

More details
SKU: S3789 (2382476)
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Size Guide

Available online

Delivery in 6 to 7 days

Our e-commerce is suspended for a transition period. We expect to be back soon!
Product benefits
  1. Anatomic design
    X-shaped back with crossed straps to free the shoulder blades
  2. Stretch
    Soft and elastic material for maximum comfort.
  3. Coverage
    Average cut, without being too open, for good freedom of movement.
  4. Chlorine resistance
    Up to 100 hours of use: recommended for occasional use
  5. Environmental impact
    Environmental impact
    C rating - Comparison: girls' one-piece swimsuit - technical info details
  • Type
    One-piece swimsuit
    X-shaped cross back
  • Frequency
  • Advantage
  • High/low cut
Product feature
  1. 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
  2. STYLE
    X-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. In X-shaped back swimwear, cross straps allow good freedom of movement. As the straps are not fixed together, they adapt to all body types.
  3. Material
    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.
  4. Use restriction
    Not recommended for use on slides.
  5. 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. For more information, visit:
Product testing
  1. Composition
    Main fabric : 80.0% Polyamide (PA), 20.0% Elastane Lining : 100.0% Polyamide (PA)
  2. Cleaning advice
    Rinse with clean water and leave out to dry after each use.
  3. Product restrictions
    Not recommended for use on slides.
  4. Product catchline
    A girls’ swimsuit with colourful patterns for a sporty look.
Product reviews
4.1 / 5
6 reviews
6 users recommend this product
Write a review
  • Why not say you need to buy bigger?

    Tony (United Kingdom)
    Used for 1 week or less
    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.
    Response of the brand
    Dear Tony,

    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 
  • Sizing is very wrong

    CRISTINA (United Kingdom)
    Used for 2 to 8 weeks
    My 9 year old daughter loved this so we bought her it in age 10 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!!
    Response of the brand
    Dear Cristina,

    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,    

  • Too small

    Lucy (United Kingdom)
    Used for 1 week or less
    My daughter is 5 and having read other reviews I bought a size 8, still too small so I returned it.
    Response of the brand
    Dear Lucy

    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,

  • Very, very small size

    Lynne (United Kingdom)
    Used for 1 week or less
    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.
  • So mis-sized!

    Suzanne (United Kingdom)
    Used for 1 week or less
    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.
    Size was very very out!
    Response of the brand
    Dear Suzanne,

    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

    Once again apologies for any inconvenience caused.

    Kind regards,
    Kornel Pintara Commercial Director Watersports DECATHLON
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