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Iconic Speedo Style. Paying homage to our legacy graphics, this stunning lilac Muscleback swimsuit features a curved splice of our evolutionary new HyperBoom graphic in shades of blue and pink. Ideal for longer swim sessions, the muscleback style enables your child to achieve a full range of motion during their swim. A great choice for frequent training sessions, our EnduraFlex fabric offers higher chlorine resistance than standard swimwear fabrics and fits like new for longer with CREORA® HighClo™. In addition, nylon yarns in the EnduraFlex fabric are made from 100% pre-consumer waste, such as waste fabric from factories.
- Muscleback - great for longer swim sessions with the design allowing full range of motion
- Higher chlorine resistance than standard swimwear fabrics - fits like new for longer with CREORA® HighClo™
- Shape Retention - fabric stretches so you can enjoy your swim without feeling restricted
- Nylon yarns in the EnduraFlex fabric are made from 100% pre-consumer waste, such as waste fabric from factories
- Gusset Linned
Standard Delivery
Standard Delivery £3.99. Free for all orders over £50.
Please allow 3-5 working days for UK delivery.
Order by midnight on Wednesday, 18th December, for Christmas delivery!
For international delivery, please check our international delivery page for details.
Delivery is Monday to Saturday, no deliveries take place on Bank Holidays.
Note: Saturday Delivery is only available in England and Wales.
Please check the stock availability notice on your item when placing your order. This item is:
In stock
Express Delivery
£5.99 Express Delivery. UK only.
Order before 3pm Mon - Fri for next day delivery.
Order by 3pm on Thursday, 19th December, for Christmas delivery!
Postcode restrictions apply.
Option will be visible at checkout if available to your address.
You can also check the status of your order and individual items by accessing My Account
Further information
Delivery page
Returns policy
International delivery
privacy policy
Girls HyperBoom Splice Muscleback Swimsuit Purple/Blue
was £18.50
£12.95
Save: £5.55
In stock
Free Christmas Cap when you spend £60 or more
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Iconic Speedo Style. Paying homage to our legacy graphics, this stunning lilac Muscleback swimsuit features a curved splice of our evolutionary new HyperBoom graphic in shades of blue and pink. Ideal for longer swim sessions, the muscleback style enables your child to achieve a full range of motion during their swim. A great choice for frequent training sessions, our EnduraFlex fabric offers higher chlorine resistance than standard swimwear fabrics and fits like new for longer with CREORA® HighClo™. In addition, nylon yarns in the EnduraFlex fabric are made from 100% pre-consumer waste, such as waste fabric from factories.
- Muscleback - great for longer swim sessions with the design allowing full range of motion
- Higher chlorine resistance than standard swimwear fabrics - fits like new for longer with CREORA® HighClo™
- Shape Retention - fabric stretches so you can enjoy your swim without feeling restricted
- Nylon yarns in the EnduraFlex fabric are made from 100% pre-consumer waste, such as waste fabric from factories
- Gusset Linned
Standard Delivery
Standard Delivery £3.99. Free for all orders over £50.
Please allow 3-5 working days for UK delivery.
Order by midnight on Wednesday, 18th December, for Christmas delivery!
For international delivery, please check our international delivery page for details.
Delivery is Monday to Saturday, no deliveries take place on Bank Holidays.
Note: Saturday Delivery is only available in England and Wales.
Please check the stock availability notice on your item when placing your order. This item is:
In stock
Express Delivery
£5.99 Express Delivery. UK only.
Order before 3pm Mon - Fri for next day delivery.
Order by 3pm on Thursday, 19th December, for Christmas delivery!
Postcode restrictions apply.
Option will be visible at checkout if available to your address.
You can also check the status of your order and individual items by accessing My Account
Further information
Delivery page
Returns policy
International delivery
privacy policy
Frequently Bought Together
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Total Price: £31.45
Add both to basket
Customer Reviews
Top Customer Reviews
Where reviews refer to clothing or accessories, results may vary from person to person. Customer reviews are independent and do not represent the views of Speedo.
Lost colour
My daughter swims 5 times a week so we purchase decent swimwear to accommodate this kind of usage. Being a teenager and wanting choice she has multiple swimsuits that she rotates. She has worn this item once a week for 6 months and it’s now very pink and see through in places. Not the same quality as the others we have bought from SpeedoÂ
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Size too small
My daughter is aged 8 and I ordered a 9-10 aged swimming costume but it is just too tight. I will reorder a bigger size.
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