10 Best Speedo Kids Swimsuit 3 4 in The UK

Last updated on 02/08/2025
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Best Choice
1
9.7
Exceptional
Speedo Boy's Learn to Swim ESential Wetsuit Neoprene Suit | SwiMing LeSons | Soft Touch | Neoprene, Turkish Sea, 4YRS4YRS
Speedo
Speedo Boy's Learn to Swim ESential Wetsuit Neoprene Suit | SwiMing LeSons | Soft Touch | Neoprene, Turkish Sea, 4YRS4YRS
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Why We Love It
  • Ergonomic design enhances mobility.
  • Quick-drying for versatile adventures.
  • Eco-friendly recycled fabric used.
Main Highlights
  • Explore more in our new Lookout Short and go beyond the pool and the surf on your toes. Adventure hard in soft Speedo 4Way Flex fabric, cut in an ergonomic design for maximum mobility. Quick-drying, water-repellent fabric transitions seamlessly from wet to dry adventures, so you’re ready for anything. Designed with a built-in liner, hidden back zip pocket, and UPF50+ sun protection. Speedo 4Way Flex fabric is made with Creora Regen, the first 100% Recycled Spandex made from reclaimed waste. Proven to perform as well as virgin Spandex.
  • Speedo 4Way Flex fabric made with Creora Regen the first 1% Recycled Spandex made from reclaimed waste, which performs as well as virgin Spandex with UPF5+ sun protection and durable water-repellent.
  • Elastic drawcord for a secure fit
  • Length: 2 Inch Inseam, 12 Inch Outsseam
  • Built-in swim liner made of 5% recycled jersey polyester
9.7
Exceptional
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Best Value
2
9.7
Exceptional
Speedo Girl's Learn to Swim Neoprene Wetsuit| Swiming LeSons | Soft Touch | Neoprene, Neon Violet, 4YRS4YRS
Speedo
Speedo Girl's Learn to Swim Neoprene Wetsuit| Swiming LeSons | Soft Touch | Neoprene, Neon Violet, 4YRS4YRS
Free Shipping
Why We Love It
  • Stay hydrated during workouts.
  • Made from sustainable sugarcane.
  • Spill-proof design for convenience.
Main Highlights
  • Stay hydrated during long training sessions using our new 1-litre Water Bottle. Ideal for keeping poolside between swim sets, our largest-capacity water bottle has an ergonomic, easy-grip design with a textured side and a one-way valve cap to prevent spills. Made in part using biobased materials – the body of the bottle is made from 100% sugarcane.
  • 1 Litre capacity - larger size capacity for longer usage.
  • Biobased materials - bottle body made from sugarcane.
  • Grip ring & side grip texture - highly functional grip placement for ease-of-use pool side during quick swim sets.
  • Auto cap - one-way valve for easy drinking without spillage.
9.7
Exceptional
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3
9.5
Superb
Save 6%
Osprey Childrens Toddlers 3 Mm Shorty Summer Wetsuit With SPF 50+ For Boys And Girls, Oyster - Pink, Age 4 EU
Osprey
Osprey Childrens Toddlers 3 Mm Shorty Summer Wetsuit With SPF 50+ For Boys And Girls, Oyster - Pink, Age 4 EU
6% Off
Why We Love It
  • Perfect for warm weather.
  • Enhanced comfort and flexibility.
  • Provides essential sun protection.
Main Highlights
  • SHORTY 3MM WETSUIT: is the ideal shorty wetsuit for spring/summer season, with 3mm neoprene on the body and 2mm under the arms for full range of motion
  • FUNCTIONAL SWIMSUIT: entirely flat locked seams and ergonomic panelling for maximum comfort. Our high quality flexible wetsuit provides high freedom of movement and insulation
  • SUN PROTECTION: the nylon fabric features UBF 50+ sun protection, to provide children with hours of endless swim and activities whilst being protected from the harmful ultraviolet rays
  • DESIGN: especially designed with stretch collar and comfortable anti rub openings, to prevent chafing and water flushing! Features a vibrant eye-catching colour so that they are easy to keep an eye on
  • SBR FOAM: increases flexibility and improves durability for long term use. The front zip is for easy changing in and out, shorty length keeps child's core warm without limiting movement
9.5
Superb
Save 6%
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4
9.3
Superb
Save 27%
Speedo Unisex Kids ILusion SwiMing Goggles | Secure Fit | Anti-fog | Anti-leak, Electric Pink/Sweet Taro/BloS, One Size
Speedo
Speedo Unisex Kids ILusion SwiMing Goggles | Secure Fit | Anti-fog | Anti-leak, Electric Pink/Sweet Taro/BloS, One Size
27% OffFree Shipping
Why We Love It
  • Full UV protection for safety.
  • Anti-fog lens enhances visibility.
  • Easy adjustments with push button.
Main Highlights
  • 100% UV Protection against all harmful UVA & UVB radiation
  • Anti fog coated lens – so your child can always see you in the pool
  • Push button adjuster at rear provides quick and easy fitting for parents
  • Flexible one-piece construction adapts to your child's face shape
  • Integrated silicone seal and strap for easy fitting, comfort and durability
9.3
Superb
Save 27%
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5
9.2
Superb
Bluey Swimsuit | One Piece Girls Swimsuit | Children's Swimming Costumes | Pink 3-4 Years
Bluey
Bluey Swimsuit | One Piece Girls Swimsuit | Children's Swimming Costumes | Pink 3-4 Years
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Why We Love It
  • High-quality and durable.
  • Ideal for Bluey fans.
  • Comfortable and stylish fit.
Main Highlights
  • Official Bluey Merchandise: Adorned with the beloved Heeler family and playful dark pink ice cream cones, this one piece Bluey swimsuit is perfect for young fans. The charming pink background with light blue sleeves, featuring the iconic Bluey logo, makes this girls swimsuit a must-have for any Bluey enthusiast
  • Make A Splash With Girls' One-Piece Swimsuits: Designed with your little one's comfort in mind, this Bluey swimming costume includes a convenient zipper on the back, giving a comfy fit for all-day fun in the water. It's the ideal choice for beach days, pool parties, or any aquatic adventure with Bluey and Bingo
  • Durable Quality For Active Kids: Crafted with high-quality polyester and elastane blend, this girls swimwear is not only stylish but also durable enough to withstand the rigors of active play. Whether it's a day at the beach or swimming lessons, this kids swim suit is made to last
  • Perfect Bluey Gift For Fans: This swimsuit makes an excellent Bluey gift, perfect for birthdays, holidays, or as a special surprise. If your child loves Bluey and Bingo, this Bluey girls swimming costume will surely bring a smile to their face
  • Versatile Girls Swimwear: Suitable for various occasions in Spring and Summer, this girls all in one swimsuit is a versatile addition to your child's wardrobe. It's not just a swimming costume; it's a piece of Bluey beach fun that can be paired with other Bluey accessories like a Bluey towel for a complete look fans will love
9.2
Superb
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6
9.0
Superb
Save 41%
Speedo Girl's Eco Endurance+ Medalist Swimsuit | Chlorine Resistance | Recycled Fabric | Comfort Fit | Swiming LeSons | Swim Holiday, Electric Pink, 11-1211-12
Speedo
Speedo Girl's Eco Endurance+ Medalist Swimsuit | Chlorine Resistance | Recycled Fabric | Comfort Fit | Swiming LeSons | Swim Holiday, Electric Pink, 11-1211-12
41% OffFree Shipping
Why We Love It
  • Promotes shoulder movement flexibility.
  • Offers quality, comfort, and durability.
  • Fabric from recycled materials.
Main Highlights
  • For curves, contours and strut-from-the-changing-room confidence, nothing beats the feel-good fit of our fitness shaping range. A vivid contrast print runs from the straps to the waist of this classic square-neck LunaLustre swimsuit, visually cinching the body. Comfy SHAPE COMPREX fabric delivers all-over shaping, whilst supportive seams and shaping fabric offer medium bust support. Designed with chlorine-resistant LYCRA XTRA LIFE. Body made of 69% Recycled Nylon, 31% Xtra Life Lycra.
  • Shape Comprex Fabric: Body made of 69% Recycled Nylon, 31% Xtra Life Lycra. Nylon yarns made from 1% pre-consumer waste, such as waste fabric from factories, with LYCRA XTRA LIFE and chlorine resistance
  • All over body shaping provides support where you need it without compromising on comfort
  • Medium bust support with shaping fabric and seaming supports and flatters the bust
  • Adjustable straps ensure a great fit
9.0
Superb
Save 41%
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7
8.9
Excellent
Save 10%
Disney Frozen Swimming Costume | Anna and Elsa Swimming Costume | Girls Swimsuit | 3-4 Years Purple
Disney
Disney Frozen Swimming Costume | Anna and Elsa Swimming Costume | Girls Swimsuit | 3-4 Years Purple
10% OffFree Shipping
Why We Love It
  • Transforms poolside into magical adventures.
  • Comfortable escapade with every splash.
  • Perfect enchanting gift for girls.
Main Highlights
  • Set Sail On A Magical Adventure With This Frozen Swimming Costume For Girls: Dive into summer fun with this captivating girls one piece swimming costume, perfect for little princesses who adore the enchanting world of Anna and Elsa
  • Elsa And Anna Design To Channel Your Inner Princess: Adorned with enchanting floral designs and pretty flowers in shades of pink, green, and blue, this Frozen swimsuit is a visual delight. Let your little princess stand out in style as she embodies the spirit of Anna and Elsa with every splash and twirl
  • Unleash Your Imagination: Embrace the world of Arendelle where every splash is a new adventure! This Disney swimming costume for girls is a magical accessory that sparks creativity, transforming every poolside moment into an epic journey through the enchanting realms of Arendelle
  • Spaghetti Straps For Comfort: Whether it's a day of aquatic fun or a beachside getaway, this kids swimming costume is the ultimate wardrobe essential. It's not just a swimsuit; it's a portal to a magical experience that will inspire endless hours of imaginative play and unforgettable memories
  • Officially Licensed Disney Merchandise: Give the gift of magic! This swimsuit for girls is the ultimate Disney gift for every Princess! Perfect for birthdays, holidays, Disneyland or any other occasion, it's a wonderful addition to her collection of Disney and Frozen gifts as well as girls’ one-piece swimsuits. Give the gift of style, fun, and enchantment – this Disney swimming costume is sure to make a splash
8.9
Excellent
Save 10%
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8
8.8
Excellent
AmzBarley Girls Swimming Costume Swimsuit Kids One Piece Swimwear Leopard Skirt Leotard Children Swim Wear Bathing Suit Summer Holiday Beachwear Age 3-4 Years 110
AmzBarley
AmzBarley Girls Swimming Costume Swimsuit Kids One Piece Swimwear Leopard Skirt Leotard Children Swim Wear Bathing Suit Summer Holiday Beachwear Age 3-4 Years 110
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Why We Love It
  • Adorable mermaid swimsuit design.
  • Soft, skin-friendly polyester fabric.
  • Quick drying and breathable.
Main Highlights
  • Adorable shoulder straps one piece swimming costume for your girls;
  • Polyamide and elastane, ice touch and silky soft, skin-friendly, comfortable fabric for your kids'skin;
  • Quick drying and breathable, chlorine and salt resistant designed for a long lasting wear;
  • One piece swimsuit, spafhetti shoulder straps, 3D printed, triangle briefs with ruffle skirt, offer a flattering look;
  • Beautiful swimming costumes for your little girls for swimming, surfing, bathing, beach holiday, poolside party, etc. Children will love it!
8.8
Excellent
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9
8.7
Excellent
Peppa Pig Girls Peppa Pig Swimsuit , Pink, 3-4 Years
Peppa Pig
Peppa Pig Girls Peppa Pig Swimsuit , Pink, 3-4 Years
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Why We Love It
  • Radiates those Summer Vibes.
  • Sweet bows and frills.
  • Ideal Peppa Pig gift.
Main Highlights
  • Peppa Pig Swimsuit For Summer: This adorable pink and white striped Peppa Pig swimming costume is perfect for a pool or a beach adventure. Featuring Peppa dressed in a delightful watermelon dress and sipping from a pineapple, this piece truly radiates those 'Summer Vibes'
  • Cute Frills and Bow Details: Your little one will adore the playful details of this bathing suit, including sweet bows on the top of the straps and a lively pink frill skirt
  • Perfect Peppa Pig Gift: If you're in search of Peppa Pig gifts, this Peppa Pig swimsuit makes an ideal Christmas or birthday present. Along with a Peppa Pig towel, it can be a fun addition to any Peppa Pig merch and Peppa Pig toy collection
  • Versatile Swimwear For Girls: This kids swimming costume is not only a great addition to kids' swim suits collections, but it can also pair with trendy Peppa Pig clothes. It's perfect for enjoying a splash during hot summer days
  • Crafted To Keep Your Little One Comfy All Day Long: Made from comfortable material, this swimsuit girls will love not just for its design but also for its comfort. It's the perfect addition to any childrens swimwear collections
8.7
Excellent
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10
8.7
Excellent
Girls Boys Bluey Swimsuit Swimming Suit Costume (Bluey, 3-4 Years)
Bluey
Girls Boys Bluey Swimsuit Swimming Suit Costume (Bluey, 3-4 Years)
Free Shipping
Why We Love It
  • Perfect for Bluey fans.
  • Comfortable and practical design.
  • Ideal for various ages.
Main Highlights
  • These are super Bluey all in one swimsuits, ideal for both girls and boys.
  • The childrens Bluey swim suit has your favourite characters Bluey and Bingo playing sand castles on the beach.
  • Little ones will love wearing the Bluey swimming suit, perfect for holidays, swimming lessons or outdoor play time!
  • The kids Bluey swimming costume comes with short sleeves and legs, high neck, with zip fastening to the back.
  • Sizes available for the Bluey swimsuit: 1-2 Years, 2-3 Years, 3-4 Year, 5-6 Years, 7-8 Years.
8.7
Excellent
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