---
product_id: 48177883
title: "Speedo Girl's Boom Splice Muscle Back Swimsuit"
brand: "speedo"
price: "¥384"
currency: JPY
in_stock: true
reviews_count: 13
url: https://www.desertcart.jp/products/48177883-speedo-girls-boom-splice-muscle-back-swimsuit
store_origin: JP
region: Japan
---

# Endurance+ fabric resists fading 100% chlorine resistant Four-way stretch for comfort Speedo Girl's Boom Splice Muscle Back Swimsuit

**Brand:** speedo
**Price:** ¥384
**Availability:** ✅ In Stock

## Summary

> 💦 Dive into durability and style with Speedo’s Boom Muscle Back!

## Quick Answers

- **What is this?** Speedo Girl's Boom Splice Muscle Back Swimsuit by speedo
- **How much does it cost?** ¥384 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/48177883-speedo-girls-boom-splice-muscle-back-swimsuit)

## Best For

- speedo enthusiasts

## Why This Product

- Trusted speedo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Signature Boom Style:** Trendy Speedo 'Boom' splice print that stands out at lessons and holidays alike
- • **Chlorine? No Problem!:** 100% chlorine resistant material ensures durability in every pool session
- • **Lasts Like New, Swim After Swim:** Endurance+ fabric keeps shape and color vibrant longer than any other swimwear
- • **Freedom to Move, Freedom to Play:** Muscle back design combined with four-way stretch technology for ultimate comfort and enhanced mobility
- • **Trusted Quality, Loved by Parents:** Highly rated with 4.6 stars and praised for perfect fit and lasting quality

## Overview

The Speedo Girl's Boom Splice Muscle Back Swimsuit features Endurance+ fabric technology that retains shape and resists fading, 100% chlorine resistance for long-lasting wear, and four-way stretch for superior comfort and freedom of movement. Designed with a muscle back style and iconic Boom print, it’s perfect for swim lessons and holidays, combining performance with trendy appeal.

## Description

Featuring A Splice Of Speedo Signature 'Boom' Print, our girls' Muscle Back Swimsuit is Perfect for swimming Lessons and holidays, and features a Muscle Back Style for comfort Enhanced Freedom Of movement. Made using our exclusive Shape-Retaining Endurance10 Technology, it's engineered to fit Like New For Longer, no matter how Often They swim.

Review: Great Swimming Costume - Bought in a size 7-8 and really happy, size fits just as expected. Great quality as always from Speedo, and fast delivery. Very happy.
Review: Great swimsuit for the money - I'm a quite small woman so I often opt for 15+16 yo size swimsuits. This one feels great and is modest. This is the second swimsuit I've gotten from Speedo and I'm very happy with the quality

## Features

- Endurance + fabric retains its shape and resists fading longer than any other swim material
- 100% chlorine resistant
- Four way stretch technology for comfort and softness

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0CLPF1XQX |
| Best Sellers Rank | 83,415 in Fashion ( See Top 100 in Fashion ) 13 in Competitive Swimwear Girls One-Piece Suits |
| Customer reviews | 4.6 4.6 out of 5 stars (1,461) |
| Date First Available  | 8 Mar. 2018 |
| Department  | Girl's |
| Manufacturer  | Speedo |

## Images

![Speedo Girl's Boom Splice Muscle Back Swimsuit - Image 1](https://m.media-amazon.com/images/I/71WAkwkSFKL.jpg)
![Speedo Girl's Boom Splice Muscle Back Swimsuit - Image 2](https://m.media-amazon.com/images/I/81C-X1SRMxL.jpg)
![Speedo Girl's Boom Splice Muscle Back Swimsuit - Image 3](https://m.media-amazon.com/images/I/71vxkj0XPPL.jpg)
![Speedo Girl's Boom Splice Muscle Back Swimsuit - Image 4](https://m.media-amazon.com/images/I/81GVWVtQuZL.jpg)
![Speedo Girl's Boom Splice Muscle Back Swimsuit - Image 5](https://m.media-amazon.com/images/I/81ftJtWJ2IL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Swimming Costume
*by R***L on 19 September 2024*

Bought in a size 7-8 and really happy, size fits just as expected. Great quality as always from Speedo, and fast delivery. Very happy.

### ⭐⭐⭐⭐⭐ Great swimsuit for the money
*by M***E on 28 December 2022*

I'm a quite small woman so I often opt for 15+16 yo size swimsuits. This one feels great and is modest. This is the second swimsuit I've gotten from Speedo and I'm very happy with the quality

### ⭐⭐⭐⭐⭐ Speedo...just what you'd expect
*by M***. on 29 March 2018*

I bought a size 28 for my 8 year old who simply loves the design and it fits her perfectly with still some give in it to last the rest of the year. It's a Speedo so it's quality is undisputed.

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**Shop now:** [https://www.desertcart.jp/products/48177883-speedo-girls-boom-splice-muscle-back-swimsuit](https://www.desertcart.jp/products/48177883-speedo-girls-boom-splice-muscle-back-swimsuit)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-26*