10 Best Boys Swim Shorts Trunks in The UK

Last updated on 02/08/2025

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Speedo Boy's Endurance+ Jamer Swiming Trunks,Training,Chlorine Resistant,Quick Drying,Stretch Fabric,Recycled Material,Comfort Fit,Black,11-1211-12

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Why We Love It

Eco-friendly, quality material.
Comfortable streamlined design.
Quick drying fabric.

Main Highlights

For curves, contours and strut-from-the-changing-room confidence, nothing beats the feel-good fit of our fitness shaping range. Our sporty Contour Eclipse swimsuit pairs a square neckline with an eye-catching digital print to draw the eye upwards and flatter your shape. 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 Percent Recycled Nylon, 31 Percent Xtra Life Lycra.
All over body shaping provides support where you need it without compromising on comfort
Adjustable straps ensure a great fit

SERENYOU Kids' Beach Trunk Boys Boardshorts Lightweight Plain Swim Shorts Orange 9-10 Years

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Why We Love It

Unique, fun water patterns.
Adjustable waistband for comfort.
Perfect for various activities.

Main Highlights

UNIQUE DESIGN: Boys beach shorts not only a summer swimwear, but also a magic and fun shorts with interesting patterns that show up when they are ssplashed to water. But when the entire pair of trousers is total wet, the pattern will disappear
STYLISH & PRACTICAL: Internal colour contrast at the waist for added style, 2 slash pockets on the side and one pocket on the back for extra storage space
ADJUSTABLE WAISTBAND: Bathing suits for boys are available in a variety of colors, elasticated waistband with a drawstring to the garment, ideal for all shapes and sizes of wearers
MESH LINING: Boys' swimwear bottoms with 2 slanted pockets and 1 back pocket to store some small toys for play, mesh-lined with moisture adds comfort for kids
OCCASION: Boys swim shorts, ideal for toddler, little or big boys, sons, grandson and little guys, perfect for swimming, beach parties, vacations, Hawaii and other activities

Super-durable ECO Endurance+ fabric.
Made from 50% recycled materials.
100% chlorine-resistant and quick-drying.

Main Highlights

Enjoy more zoooom per Boom wearing our junior Splice Jammer with a go-faster stripe of green Boom logos. An adjustable drawcord allows a secure fit, while a v-panel liner keeps them comfortable. Made from chlorine-resistant EnduraFlex fabric with 4-way stretch and shape-retaining CREORA HighClo. Body made of 80 Percent Recycled Nylon, 20 Percent Elastane (Creora HighClo).
Secure Fit: Internal drawcord allows you to adjust the fit
V Panel Liner made from 1 Percent Recycled Polyester

MEILONGER Boys Swimming Shorts Quick Dry Beach Board Trunks Swimwear Bathing Suits Size 6-7,8,10-12,14-16(Black,14-16)

20% OffFree Shipping

Why We Love It

Soft and comfortable fit.
Quick-dry fabric technology.
Secure adjustable waistband.

Main Highlights

→7.9-8.9" inseam, 16.5-18.7" outseam.Mesh lining:Soft & comfortable
→Soft and comfortable:The boardshort's flatlock seams add softness and protection without skin chafing and irritation. It will fit most boys from 7-13 years
→Quick dry fabric:Our brand boy's bathing suits or swim trunks all get great quick dry function. normally take 5 to 10 minutes, shorts will dry already.lightweight and durable for your boy most comfortable pair of swim trunks.quality material that will withstand all your boy's summer adventures
→Pocket design:The boy's swim trunks beach board shorts swimwear bathing suits has 2 side seam pockets,give plenty of options for storage
→Elastic waistband with drawstring:Our swim trunks board shorts combined a comfortable elastic waistband with adjustable drawstring for a ultimate security. Your Boy's swim shorts will never sag or slip down when you swimming, beach surfing, running, ball sports and at home, etc.It is an amazing gift for a birthday, or just to get a smile from the little surfer in the house

adidas Boy's 3-Stripes Swim Boxers Kids, Black/White, 12-13 Years

31% OffFree Shipping

Why We Love It

Perfect snug fit for comfort.
Customizable fit with drawcord.
Eco-friendly recycled materials used.

Main Highlights

Tight fit
Drawcord on elastic waist
78% polyamide (recycled), 22% elastane
Infinitex fabric

JIMJOOS Boys Swimming Shorts (Ages 3-10) – Quick-Dry Swim Trunks with Adjustable Drawstring & Boxer Mesh Lining – Kids Swim Shorts with Pockets (UK, Age, One Size, Regular, 13-14 Years, Black)

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Why We Love It

Comfortable fit for active kids.
Quick-dry fabric ensures all-day comfort.
Durable design withstands rough play.

Main Highlights

PERFECT FIT FOR BOYS (AGES 3-14) : These boys swimming shorts fit true to size, offering a comfortable fit that kids love. Designed for swimming lessons, beach days & holidays, they provide excellent value for money with a secure, adjustable waistband.
HIGH-QUALITY QUICK-DRY FABRIC : Made from 100% polyester, these boys swim trunks dry fast & don’t stick to the skin when wet. The soft material ensures all-day comfort, making them ideal for summer, holidays & swimming lessons.
ADJUSTABLE DRAWSTRING WITH STOPPER : No more lost or tangled cords! Our boys board shorts feature a push-button clamp for easy adjustments—great for kids who struggle with tying knots. Metal-reinforced eyelets prevent tearing for long-lasting durability.
DURABLE & BUILT TO LAST : Unlike cheaper boys swim shorts, these boys swimming trunks feature double stitching & metal eyelets at stress points to prevent ripping. Designed for active kids, they stay strong even after repeated use in pools, beaches & water parks.
COMFORTABLE BOXER STYLE MESH LINING : Say goodbye to uncomfortable brief-style linings! These kids swim shorts have nylon and spandex material boxer-style mesh lining, providing extra coverage & a soft, breathable feel, perfect for all-day wear.
SECURE POCKETS WITH DRAINAGE SYSTEM : Two side pockets with half-mesh lining let water drain easily, while a back pocket with a reinforced drainage hole prevents water build up. Perfect for carrying small essentials without the risk of waterlogging.
VIBRANT COLOURS THAT STAY BRIGHT : Available in classic black & stylish blue, these boys swim shorts retain their colour wash after wash. Unlike cheaper options, they don’t fade or look dull after multiple wears, making them a reliable choice for kids.
EASY TO WASH & MAINTAIN : Made from 100% Polyester quick-dry fabric, these kids swimming shorts are machine washable & maintain their shape over time. No shrinking, no fading—just long-lasting quality designed for active boys.
IDEAL FOR HOLIDAYS & SWIMMING LESSONS : These boys swimming trunks are lightweight, breathable & perfect for hot weather. Whether it's swimming lessons, beach holidays, or pool days, they offer great value for money & superior comfort.
TRUE TO SIZE & STAYS IN PLACE : Designed for boys aged 3-14, these swimming trunks have an elastic waistband that stays put, even during energetic swimming sessions. Customers love the comfortable fit & accurate sizing—no need to size up or down!

Adjustable waistband for comfort.
Water-draining side pockets.
Eco-friendly recycled material.

Main Highlights

Adjustable Fit - Elasticated waistband with external drawcord for security and comfort
Side Seam Pockets with water drainage
Lightweight fabric for a comfortable fit
Made in part from 100% recycled nylon

Marvel Avengers Swim Shorts | Iron Man and Hulk Boys Swimming Trunks | Boys' Swim Shorts & Trunks | Age 4 to 5 Years Multicoloured

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Why We Love It

Vibrant colors and designs.
Elastic waistband for comfort.
Official Marvel merchandise gift.

Main Highlights

Heroic Marvel Swim Shorts: Designed to elevate your little Avenger's beach adventures to legendary status, these Marvel swimming trunks in vibrant red and blue are a must-have for any young superhero in training
Marvel Swimming Shorts With Two Avengers Designs: Dive into a world of excitement as your child wears these captivating boardshorts adorned with the iconic faces of Captain America and The Incredible Hulk, proudly displayed alongside the unmistakable Avengers logos on the front. Whilst the back boasts a design of Thor and Iron Man
Elasticated Waistband For Extra Comfort: Say goodbye to discomfort and hello to adventure with the unbeatable comfort of these Avengers swim shorts with an elasticated drawcord waistband. Whether they're riding waves, building sand fortresses, or simply basking in the sun, these boys’ shorts offer hours of playtime fun
Fan Favourite Avengers Gifts: Rest assured that these Marvel comic boys swimming shorts are more than just epic beach shorts; they're officially licensed Marvel merch! From the stitching to the heroic graphics, every detail of these boys swim shorts reflect the high standards of Earth's mightiest heroes
Official Marvel Merchandise: Make waves with the ultimate Marvel birthday gift for young superhero enthusiasts! These Marvel swim shorts boys will love aren't just your ordinary boys gifts; they're a promise of endless excitement and adventure

Aiseyi Boys Swimming Shorts Kids Swim Trunks Swimwear Swimming Costume with Lined and Elastic Waistband Dark Blue 11-12 Years

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Why We Love It

High quality, durable fabric.
Adjustable, secure waistband.
Bright, stylish design.

Main Highlights

👍🏼High Quality Fabric: the Boys Swimming Shorts are rather thick. durable, not see through, stretchy, chlorine-resistant, nicht verblassend, quick-drying,saltwater-resistant , UV-resistant.
👍🏼Excellent Fit: Kids Swim Trunks has elastic waistband and inner cord. They can be adjusted to be tightened so that they don't slip when diving.
👍🏼Comfortable Swimming Shorts：Lined at the front will give max comfortable.
👍🏼Swim Trunks style: the Swim Trunks use coloured bright green/dark blue stripes on the sides. Classic and fashion.
👍🏼Suitable Occasion: beach vacation, swiming class, swiming club. Definitely a must have for this summer! Size: 7-8 Years(waist: 20.47"-22"),9-10 Years(waist: 22"-23.62"),11-12 Years(waist: 23.62"-25.19"),13-14 Years(waist: 25.19"-27.56"),

Marvel Boys Spiderman Swim Shorts, Blue Age 5-6 Years

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Why We Love It

Cool design for summer.
Comfortable and trendy wear.
Perfect gift for fans.

Main Highlights

SPIDERMAN SWIM SHORTS - Our Spiderman Swim Shorts are essential for swim wear. These comfy shorts have been designed based on featuring the awesome Spiderman and Venom. The Shorts comprise an elasticated waist with a real drawstring for the perfect fit. The Colour combination is sure to look cool in the summer sunshine or by the poolside. Any Spiderman fan will love these sporty shorts for either holiday / summer / beach / swim wear as they have excellent colours coupled with a trendy design.
VERSATILE - Your kids will love these Spiderman Shorts that have been designed to offer comfort, style and versatility. We’ve made sure that they include a real drawstring to secure the fit. Spiderman will keep his beady eye on you!
MARVEL OFFICIAL PRODUCTS - 100% Official Marvel products. Designed in the UK by the leading Character manufacturer. We always use prime quality materials to ensure durability and comfort. These awesome looking Trunks will feel both comfortable to wear and look great on.
GIFT IDEA FOR MARVEL SPIDER-MAN FANS - The perfect gift for any Spiderman / Marvel fans! This fantastic Swimwear for kids is both trendy in design and comfortable.

8.7

Excellent

We scanned 544 products

We reviewed these offers relevant to the Boys Swim Shorts Trunks within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Speedo, SERENYOU, MEILONGER, adidas, JIMJOOS, Marvel, Aiseyi, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Boys Swim Shorts Trunks in the market, we considered we took a deep dive into 2721 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Speedo Boy's Endurance+ Jamer Swiming Trunks,Training,Chlorine Resistant,Quick Drying,Stretch Fabric,Recycled Material,Comfort Fit,Black,11-1211-12. We love many things about this product by Speedo. What sets it apart from the competition is Eco-friendly, quality material. , Comfortable streamlined design. , Quick drying fabric.
The best value product for most shoppers and where user satisfaction is continuously the highest is SERENYOU Kids' Beach Trunk Boys Boardshorts Lightweight Plain Swim Shorts Orange 9-10 Years by SERENYOU based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Boys Swim Shorts Trunks and the best cost-to-value ratio is adidas Boy's 3-Stripes Swim Boxers Kids, Black/White, 12-13 Yearsat adidas with a 31% discount.
Our list of the best Boys Swim Shorts Trunks is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Boys Swim Shorts Trunks in The UK

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We scanned 544 products

We concluded that: