Best S Boys Swim Trunks in 2026

UPF 50+ Quick Dry Microfiber: Lightweight and durable for your most comfortable pair of boys swim trunks

Side Seam Pockets and Cargo Pockets give plenty of options for storage

Available in Mens Sizes S-XXL and Boys Sizes 2T through 20 so Dad's and Kids can hit the beach as a team

☀ RECYCLED 4-WAY STRETCHY FABRIC - Shell: 90% recycled polyester, 10% spandex.Durable swimming bottoms,light weight high-performance & water repellent for Quick-drying,with moisture-wicking features and a UPF 50+ finish to protect kids from the sun’s harmful ultraviolet rays.

☀ COMFORTABLE BOXER BRIEF LINER - Super soft smooth material for the built-in compression liner, but lining is not too tight,considering your kids need some give in the growing period.This swimming trunks will allow your boys to enjoy the beach,pool without chafing burn,comfortable & supportive.Also it's not only a bathing suit,but also a nice piece for playing,running,training,workout...

☀ FUNCTIONAL DRAWSTRING & METAL GROMMETS - These boys' swimsuits have real drawstring all around waist which can be tighten,kind elastic waistband offers a great, personal fit even for slim and husky boys,also help secure tightly when performing rigorous activities.Big boys Sizes 6-8 10-12 14-16 18-20 is a must have beachwear essential,including youth young men.

Classy and trendy designs: Our boys bathing suits have over 30 new and classic designs and including camo swim trunks, American flag boys swim trunks, dinosaur, and a range of solid colors including red, ocean blue or black. All-new designs include tropical flowers and fruits, ocean animals or trending stripes.

Made for Comfort: These boys swim trunks use triple layers, including mesh lining and ultra-soft, breathable and lightweight fabric to ensure your greatest comfort. Our extra thick drawstring not only looks stylish, but won’t easily loosen

Made to Perform: Our boys swimming trunks are made to last, so that your kid can enjoy the fun at the beach. We leave room at the crotch and thigh, while keeping your boy looking slim and fit. They’re quick-drying, too.

Boys Swim Trunks with UPF 50+: Lightweight, comfortable,waterproof and quick dry 4-way stretch fabric; UPF 50+ which blocks 98% of the sun’s harmful ultraviolet rays.

Boys Beach Shorts with Mesh Liner: You could adjust your waistline freely with elastic waist and drawstring. The mesh lining keeps the swim trunks from sticking to your skin when swimming and sweating.

Boys Swimsuit with Novelty Patterns: Inspired 3D prints with galaxy, smoke, cat, wolf, dinosaur, palm, flag, shark and so on. They will make your style come alive with its unique patterns.

100% polyester,soft and comfortable.

Water repellent technology dries fast and resists fading.

Elastic waistband with adjustable drawstring,convenient two sides pocket.

【Made for Comfort】- These boys swim trunks use triple layers, including mesh lining and ultra-soft, breathable and lightweight fabric to ensure your greatest comfort. Our extra thick drawstring not only looks stylish, but won’t easily loosen.

【Made to Perform】- Our boys swimming trunks are made to last, so that your kid can enjoy the fun at the beach. We leave room at the crotch and thigh, while keeping your boy looking slim and fit. They’re quick-drying, too.

【Classy and trendy designs】- Our boys bathing suits have over 30 new and classic designs and including camo swim trunks, American flag patriotic boys swim trunks, dinosaur, and a range of solid colors including red, ocean blue or black. All-new designs include tropical flowers and fruits, ocean animals or trending stripes.

TFJH E's Original Swim Shorts, Bottoms ,Special for Swimming, Surfing , Boating,Beach and other water sports

Drawstring at waist band for secure fit

4-way stretch fabrics, lightweight, breathable and quick drying

Features: Elastic waistband, drawstring, two side pockets.

UV Protection: The boys swim trunks is made of 100% polyester which is fast-drying, soft and breathable. It can effectively resist UV rays and protect the kids skin.

Novelty patterns: 3D printing, lifelike and never fade. You will have a variety of options in here: ferocious dinosaurs, rave cats, scary skulls, laid-back beaches, etc.

☁☁ UPF 50+ Thin Fabric--Polyester and spandex, durable, soft, with better ability to discharge water/moisture, making the swim trunks lightweight and quick dry.

☁☁ Unique & Cool 3d Pattern Design--100% No fading,cracking.With popular elements and matching international colors, your son will be the center of attention in the beach/pool party, can help you bring lots of compliments.

☁☁ Fashion Printed Beach Shorts--Mesh Lining Inside, elastic waistband with adjustable drawstring, medium length, 2 side pockets give plenty of options for storage.

🌴Material: The boys swim trunks are made of 100% polyester with silky smooth mesh lining offers all the extra support your boys. UPF 50+ blocks 90% of the sun's harmful ultraviolet rays. The smooth polyester fabric is lightweight, comfortable, and quick dry. The silky smooth mesh lining offers all the extra support your boys need during any activity.

🌴Design: Boys swim trunks swimsuit with the latest design and unique printed pattern. The fashion style will be on full display with this cool and comfortable fit boy's swim trunks with tropical inspired prints. These boys swim trunks will make the boy’s style come alive with their unique patterns. The above the knee style is more convenient to play and run around anywhere all day long.

🌴Feature: Boys swim shorts are designed with elastic waistband and adjustable drawstring. Two side pockets and one back pocket with nicely embroidered drain hole. And the side seam pockets adopt mesh fabric to facilitate water and sand drain quickly, allowing kids to move freely in the pool, or beach, without restraint.

Swim shorts have an elastic waist, adjustable drawstring, inner mesh lining, UV 50

Kids sizing: 4/5, 6/7, 8, 10/12, 14/16

Sizing: 4/5 (shown as 4-5 years) and 6/7 (shown as 6-7 years)

Officially licensed DC Comics Justice League big boys cute and stylish swimming shorts bottoms

Featuring the Dark Knight superhero Batman the Man of Steel superhero, Superman

Awesome sublimation print design; UPF 50+ material for UVB and UVA protection and worry-free sun time

❤Material: The Boys' Compression Swim Trunks are made of polyester with a silky compression lining and are ultra-light, breathable, chaf-proof boxer briefs. Flat-angle lining, more comfortable than ordinary triangular mesh lining, covering private parts and preventing skin chafing.

❤ Features: Boys swim shorts are designed with the latest boxer briefs; waterproof, quick-drying, 4-way stretch polyester fabric; a elastic waistband with adjustable drawstring； double side pockets, one pocket lined in the boxer briefs， The side seam pockets adopt mesh fabric to facilitate water and sand drain quickly ，allows kids to move freely in the pool, beach, without restraint.

❤Design: kids Compression swimming trunks with the latest print design, gradient palm tree, gradient blue starry sky, gradient feather, Botanical Green, Geometry, Blue Grass, Miami teal, Bright Royal, make your child more bright in the beach , let your boy have more energy and enthusiasm.

Officially licensed Pokemon big boys cute and stylish swimming shorts bottoms

Featuring Charmander Ivysaur Pikachu Wartortle

Awesome sublimation print design; UPF 50+ material for UVB and UVA protection and worry-free sun time;

This boys swim shorts are made of 90% upcycled plastic bottles,it will need about 10 upcycled plastic bottles to make one piece.We just want to protect our earth by this method.Everyone can contribute to the beauty of the earth.

It is the 1st generation innovative MILANKERR compression lined boy swim trunks.The different is we made a built in boxer underwear instead of classic mesh briefs,which is more stretch,more support.For the liner, the seam is away from the skin. It is sewn in a manner so the seam will not rub against skin - the seam is against the fabric of the outer short.

Based on the compression liner,you will fell not chafed,more support,more comfortable.This bathing suit is just like wearing underwear. It does not bunch up and doesn’t have to worry about chafing like the classic mesh liner. It holds "things" in place more comfortably and keeps them hidden away better than mesh.

★ Quick Dry ★ 100% Polyester.This boys swim trunks comfortable elastic waist with drawstring for adjustable.

★ Pocket ★ This swim shorts for boys has 2 pockets on side for convenient storage. And 1 back pocket with velcro.

★ Soft ★ Quick drying boys shorts with mesh brief inside provide you the max comfort.The soft, thin lining is better for a child's skin.

Material: 100% polyester, elastic at the waist, pockets on both sides, safe material, light and comfortable.

Design: The swim trunks are designed with an elastic waist and the drawstrings are tightened. Pockets on both sides for personal items such as cell phones, wallets and keys. The inside of the beach shorts has a silky smooth mesh lining. Safe, quick-drying fabric, free stretch and UPF30 + sun protection index can block harmful UV rays from the sun.

Comfort: A sleek polyester fabric that is lightweight and comfortable for boys' swim pants. You can provide the convenience and comfort you need at the beach, pool or any wandering. Quick dry beach board pants are perfect for you.

ELASTICATED WAISTBAND JURASSIC WORLD SWIMMING SHORTS FOR BOYS - Our super cool Jurassic World bathing trunks for children is the best way to splash around during holiday vacations, swimming on beach and pool days whilst staying comfortable in dinosaur style!

BATHING SHORTS AVAILABLE IN VARIETY OF SIZE - The Jurassic World Dinosaur swim shorts for kids comes in sizes; 4-5, 5-6, 6-7, 7-8, 8-9, 9-10, 10-11, and 11-12 years offering a comfortable and regular boys fit made for ultimate comfort, perfect for beachwear!

85% POLYESTER & 15% ELASTANE T REX SWIM SHORT BOTTOMS - The Jurassic World swimwear for boys is made from mixed materials for a light and very soft feel. Perfect for your holiday suitcase, the Jurassic World pool shorts have an elasticated waistband for the perfect fit!

UPF 50+ quick dry microfiber, very comfortable, lightweight and breathable.

Fashionable tropical inspired prints, Interior comfort brief mesh lining.

Elastic waistband inside adjustable drawstring, these swim trunks will fit most boys from 8-20.

HIGH-QUALITY MATERIAL: Our Boys Swim Trunks Shorts are made of 100% Polyester high-quality fabrics. The comfortable and soft quick-drying fabric has four-way stretch and the UPF 50+ can block 98% of harmful UV rays.

SUITABLE OCCASIONS: Our Kids Swim Shorts have a variety of different pattern prints, suitable for all occasions, such as walking on the beach, running, swimming, surfing, playing, rafting, hanging out on the beach or at home, etc., are very suitable for your child. Buy these high-quality beach board shorts for your boys and girls!

COMFORTABLE DESIGN: Boys Swim trunks with a silky mesh lining, an adjustable waist and a drawstring closure are extremely durable and comfortable, providing all the extra support for your child when they are in the beach and swimming pool or for any activity.

Made of SPF/UPF 50+ fibers, machine washable

Comfortable fit: Elastic waistband with adjustable draw string, fix these swim shorts right in place

Soft material: Use ultra soft mesh lining, your boy can wear these swim trunks for whole day without chafing issue

GREAT QUALITY: This boy's swim trunk features an elastic waistband with drawstring closure. Extremely durable and comfortable. Made with comfort technology quick dry fabric with UPF 50+ which blocks 98% of the sun’s harmful ultraviolet rays. When you wear these swim trunks for boys you can easily feel how great the quality is compared to the average swimming shorts.

COMFORT: This is so much more than a pair of boys athletic swim trunks. It embodies the spirit of travel or walking for fun. The smooth polyester fabric is lightweight and comfortable. The inside of the shorts has a silky smooth mesh lining which offers all the extra support you need during any activity at the beach, pool, or if you're just lounging around. These boy shorts are known comfort so you can spend an entire day wearing these shorts.

STYLE: Whether you get it for the comfort or for fashion your style will be on full display with this cool and comfortably fit boy's swim trunks with tropical inspired prints. You can be sure no one else will have the same or similar shorts. This unique swim trunk for boys is one of a kind. This playful wrinkle free and water resistant shorts will make your style come alive with its unique patterns.

2 in 1 Men Compression Liner Swim Trunks Mens Swim Wear: Our swimming trunks are particularly designed with compression liner not only offer a private protection but they also provide perfect support for legs in boys’ outdoor activities. These swim trunks held up well to avoid any wardrobe malfunctions during swimming, surfing, laying down, bending over.

Mens Swim Trunks with Perfect Fit: These mens swimming trunks have 8 Sizes: S/M/L/XL/XXL/3XL/4XL/5XL, please check our size chart carefully to choose your perfect size.

Drawstring & Elastic Closure Swim Trunks Bathing Suit: Drawstring can be used freely to adjust tightness based on your Waist.

HIGH-QUALITY MATERIAL: Our Boys Quick Dry Swim Trunks are made of 100% Polyester high-quality fabrics. The comfortable and soft quick-drying fabric has four-way stretch and the UPF 50+ can block 98% of harmful UV rays.

COMFORTABLE DESIGN: Swim trunks have a silky mesh lining, an adjustable waist and a drawstring closure. They are extremely durable and comfortable, providing all the extra support for your child when they are in the beach and swimming pool or for any activity.

SUITABLE OCCASIONS: Our Kids Swim Shorts have a variety of different pattern prints, suitable for all occasions, such as walking on the beach, running, swimming, surfing, playing, rafting, hanging out on the beach or at home, etc., are very suitable for your child. Buy these high-quality beach board shorts for your boys and girls!

UPF 50+ SUN PROTECTION: These super cool swim trunk shorts are fabricated with UPF 50+ technology to help prevent sunburn and protect your boy’s delicate skin

WATERPROOF ZIPPER POCKET: Don’t worry about your boy losing anything while he's playing in his favorite swim suit; Suitable for sports activities such as surfing, kayaking, swimming, wakeboarding, or running on a sandy beach

QUICK DRY BOARD SHORTS: Swim trunk material wicks moisture and dries fast after fun in the water to keep boys active, fresh, and comfortable while preventing rashes

Machine washable for easy clean up

Cute dinosaur print，your boy could easily feel how great it is when they wear these swim trunks.

suitable for boys to play in beaches, swimming pools and other places

Stretch waistband with internal drawcord for a comfortable, custom fit

Built-in mesh brief enhances comfort and support

Water repellent finish shed excess moisture

AWESOME POKEMON SWIMMING SHORTS FOR BOYS - Our super cool Pokémon Pikachu bathing trunks for children is the best way to splash around during holiday vacations, swimming on beach and pool days whilst staying comfortable in gamer style!

BATHING SHORTS AVAILABLE IN VARIETY OF SIZES - The Pokémon gamer swim shorts for kids comes in sizes; 4-5, 5-6, 6-7, 7-8, 8-9, 9-10, 10-11 and 11-12 years offering a comfortable and regular boy fit made for ultimate comfort, perfect for beachwear!

100% POLYESTER PIKACHU SWIM SHORT BOTTOMS - The Pokémon swimwear for boys is made from polyester for a light and very soft feel. Perfect for your holiday suitcase, the gamer pool shorts have an adjustable drawstring waistband for the perfect fit!

Material: The Boys' Compression Swim Trunks are made with breathable quick dry, sun proctection fabrics. The silky compression lining is a 4-way stretch, ultra-light, breathable, Anti-chafing, and prevents itching caused by sand.

Features: Boys' swim shorts features with compression liner, quick-drying, 4-way stretch, an elastic waistband with adjustable drawstring, double side pockets, and one pocket lined.

Pattern: kids' Compression swimming trunks feature Dinosaur, Shark, Cat, and Astronauts print. It would make your little boys' style come alive with these vivid patterns.

OFFICIALLY LICENSED BIG CHILL: Boys’ 2 Pack Swim Suit Trunks; From frigid temperatures to the heat of the tropics, Big Chill has your entire family covered no matter where the vacation takes you

SWIMWEAR FOR BOYS: Skin friendly fabric of these swim shorts for boys is perfect for your boy's delicate skin; Let your son enjoy the summer without worrying about sunburn with our high-quality swim trunks; Perfect while having fun at the pool or beach, these lightweight, durable, and comfortable shorts will withstand all his summer adventures

QUICK DRY: Perfect boys' bathing suit for the beach, pool, and summer vacation; The smooth fabric is durable for a long lasting fit with reduced discomfort and irritation; Reliable UV protection for your boy, so you both can enjoy your day worry-free; These swim trunks for little and big boys are a real summer must-have