Top 10 Costumes for Boys 11-12 UK – Boys’ Swim Shorts & Trunks

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1. Super Mario

Super Mario Swimsuit for Boys | Blue Green Two Piece Top & Shorts Bathing Suit | Kids Gamer UV50+ Sun Safe Swimming Costume 11-12 Years

Super Mario - Awesome sun safe super mario top & shorts swimming suit for boys - our super cool super mario bathing trunks and shirt for children is the best way to splash around during holiday vacations, 7-8 years, 9-10 years and 11-12 years offering a comfortable and regular boys fit made for ultimate comfort, 5-6 years, swimming on beach and pool days whilst staying comfortable in gamer style! Bathing suit available in variety of size - the super mario gamer swimsuit for kids comes in sizes; 3-4 years, perfect for beachwear & swimming lessons!.

Mixed materials super mario swimming costume - the super mario swimwear for boys is made from 93% polyester and 17% elastane however the lining is made from 100% polyester for a light and very soft feel. Perfect for your holiday suitcase, super mario, the gamer pool shorts an adjustable drawstring waistband for the perfect fit! Fun super mario gamer swim costume for him - the gamer two piece swim set comes in a faded blue to green colour showcasing the unstoppable team, Luigi and Yoshi on their next adventure with a official game logo making a must have Super Mario present for gamers.

Officially licensed super mario merchandise – this super mario sunsafe swim trunks & top set for him is 100% official Super Mario merchandise, to get the most out of this product please follow all wash and care label instructions before use.
BrandSuper Mario
ManufacturerVanilla Underground
Height1 cm (0.39 Inches)
Length27 cm (10.63 Inches)
Weight0.2 kg (0.44 Pounds)
Width22 cm (8.66 Inches)

2. HUAANIUE

HUAANIUE Boys 3-12 Years Two Piece 50+UV Swimsuit Costume 11-12Y Short Navy

HUAANIUE - Material: 80%nylon +20%lycra, Set include: Two Piece swimsuit. Super cute print flower and butterfly, Pretty for you baby girl, Comfortable fit -fabric stretches so children can enjoy their swim without feeling restricted. Measurement in the description, please check carefully to make it fit for your baby girl. Lightweight, quick drying and easy to pull on and down. Upf 50+ protects children against the suns UV rays. Best choice for summer surfing, beach holiday, bathing and swimming. Hand wash is highly recommended.
BrandHUAANIUE
ManufacturerHUAANIUE
Weight0.15 kg (0.33 Pounds)
Part NumberHS249_Navy_152/158
ModelHS249_Navy_152/158

3. Speedo

Blackvenommango, Boys, Speedo Jungleroar Allover Panel Aquashort Swimming Costume for Children, Swim Briefs, 8-09530D841, 11-12 años

Speedo - Color: Blackvenommango. Model number: 8-09530D841. Item package Quality: 1. Country of origin:- Cambodia.
BrandSpeedo
ManufacturerSPEEDO
Weight0.3 kg (0.66 Pounds)
Part Number8-09530D841
Model8-09530D841

4. Mufeng

Mufeng 2PCS Kid Boys Swimming Costume Mock Neck Long Sleeves Shark Pattern Top with Bottoms Set Blue 11-12 Years

Mufeng - Stretchy fabric, round neck, comfortable and breathable. Size table means age ranges for boys, but they are for general guidance only. Suitable for swimming, bathing, surfing, swimming pool or beach wear. Matching swim cap, bottoms with drawstring at waist for adjustment. Cute and stylish swimwear outfit for your boy. Long sleeves, swim tops printed with shark pattern at front. Swimsuit set is made of polyamide and spandex material, hand wash.
BrandMufeng

5. Freebily

Freebily Kids Boys Girls Short Sleeve Zip Rash Guard Swimsuit Sun Protection Shorty Wetsuit UPF 50+ Swimming Costume Navy Blue 10-12 Years

Freebily - It is suitable for swimming, bathing, surfing, beach wear. Fashionable swimwear for your kids. Upf 50+ sun protection. Swimsuit is made of polyamide and spandex material, hand wash. Flat lock stitching for superior quality with soft, quick drying and 4 way stretch fabrics. Short sleeves, front zipper closure for easy dressing, with zipper flap to protect your kid's delicate skin when zipping and unzipping. Size table means age ranges for kids, but they are for general guidance only.
BrandFreebily
ManufacturerFreebily

6. iEFiEL

IEFiEL Kids Boys Girls One Piece Rash Guard Swimsuit Short Sleeves Zipper Swimming Costumes UPF 50+ Wetsuit Blue 10-12 Years

iEFiEL - Upf 50+ sun protection. Swimsuit set is made of polyamide and spandex material, hand wash. Matching a swimming cap. Short sleeves, front zipper closure for easy dressing, crew neck, with zipper flap to protect your kid's delicate skin when zipping and unzipping. Size table means age ranges for boys, but they are for general guidance only. Flat lock stitching for superior quality with soft, quick drying and 4 way stretch fabrics. Suitable for swimming, surfing, bathing, swimming pool or beach wear.
BrandiEFiEL
ManufacturerIEFIEL

7. Speedo

Black/Citron/fed red/Beautiful Blue/White, 11-12, 8-12405F310_2XL, Speedo Marvel Digital Jammer 1 Leg Jm Swimming Costume for Boys, Swim Briefs, Boys

Speedo - Made of speedo endurance 10 fabric, designed to fit like new for longer. Drawstring waist, our swimsuits a comfortable and secure fit. Our kids swimsuits are durable, soft to the touch and more resistant to sunscreen than traditional swim fabrics. Our exclusive speedo fabric is designed to retain its shape and look like new for longer. Tissue blocks 98% of UVA and UVB rays.
BrandSpeedo
ManufacturerSPEEDO
Weight0.05 kg (0.11 Pounds)
Part Number8-12405F310_2XL
Model8-12405F310_2XL

8. dPois

DPois Kids Boys Girls' Shorty Wetsuit Short Sleeve Zippered Rash Guard Swimsuit Sun Protection Sunsuit Swimming Costumes Blue 11-12 Years

dPois - Upf 50+ sun protection. Short sleeves, front zipper closure for easy dressing, with zipper flap to protect your kid's delicate skin when zipping and unzipping. Suitable for all water sports like swimming, body boarding, snorkeling, diving, surfing or just at the lake or on the beach. Swimsuit is made of polyamide and spandex material, hand wash. Fashionable swimwear for your kids. Size table means age ranges for kids, but they are for general guidance only. Flat lock stitching for superior quality with soft, quick drying and 4 way stretch fabrics.
BranddPois

9. Mufeng

Mufeng Kids Boys Girls Sunsafe Swimming Costume Short Sleeves Zippered Swimsuit Rash Guard UPF 50+ Blue 10-12 Years

Mufeng - Short sleeves, front zipper closure. Swimsuit is made of polyamide and spandex material, hand wash. Stretchy and lightweight fabric, quick drying, comfortable and breathable to wear. Upf 50+ sun protection. Size table means age ranges for girls, but they are for general guidance only. Double stitched seams. Suitable for swimming, bathing, beach wear, surfing, etc.
BrandMufeng

10. Speedo

Speedo Boy's Essential Endurance+ Jammer, BlueNavy, 11-12 Years

Speedo - Quick dry helps Jammers dry faster. 100 percent chlorine resistance ensures long lasting performance. Shape retention - stretch fabric allows a fun swim without feeling restricted. Secure fit - internal drawcord allows fit adjustment for growing bodies. Drawstring waist for enhanced fit and security. Front lining provides added comfort and modesty.
BrandSpeedo
ManufacturerSpeedo
Height7 cm (2.76 Inches)
Length23 cm (9.06 Inches)
Weight0 kg (0 Pounds)
Width14 cm (5.51 Inches)
Part Number8-00730778030
Model8008487780